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87-465: The Canonets were a series of rangefinder cameras made by Canon from the early 1960s to the early 1980s. They were aimed at enthusiasts on a budget and more discerning point-and-shoot photographers. The cameras are considered to have made Canon famous worldwide. The models included: This camera-related article is a stub . You can help Misplaced Pages by expanding it . Rangefinder cameras Most varieties of rangefinder show two images of

174-464: A Joint Security Area at Panmunjom . The conflict caused more than 1 million military deaths and an estimated 2 to 3 million civilian deaths. Alleged war crimes include the mass killing of suspected communists by Seoul and the torture and starvation of prisoners of war by Pyongyang. North Korea became one of the most heavily bombed countries in history, and virtually all of Korea's major cities were destroyed. No peace treaty has been signed, making

261-474: A 121-degree angle of view; only recently have equivalent SLR lenses become available, though optically inferior. The absence of a mirror also means that rangefinder lenses have the potential to be significantly smaller than equivalent lenses for SLRs as they need not accommodate mirror swing. This ability to have high quality lenses and camera bodies in a compact form made Leica cameras and other rangefinders particularly appealing to photojournalists. Since there

348-465: A different shape to those with other cameras, with openings cut out of them to increase the visible area. The rangefinder design is not readily adapted for use with zoom lenses , which have a continuously variable field of view. The only true zoom lens for rangefinder cameras is the Contax G2 Carl Zeiss 35–70 mm Vario-Sonnar T* Lens with built-in zoom viewfinder. A very few lenses, such as

435-399: A focal length slightly longer than a normal lens ); use of a much different focal length would result in a viewfinder with a different magnification than the open eye, making fusion of the images impossible. There is also the difference of the eye-level since the eye looking in the viewfinder actually sees the frame from slightly below the other eye. This means that the final image perceived by

522-501: A general attack across the 38th parallel, rather than a limited operation in Ongjin. Kim was concerned that South Korean agents had learned about the plans and that South Korean forces were strengthening their defenses. Stalin agreed to this change. While these preparations were underway in the North, there were clashes along the 38th parallel, especially at Kaesong and Ongjin, many initiated by

609-424: A rangefinder camera is offset from the picture-taking lens so that the image viewed is not exactly what will be recorded on the film; this parallax error is negligible at large subject distances but becomes significant as the distance decreases. For extreme close-up photography, the rangefinder camera is awkward to use, as the viewfinder no longer points at the subject. More advanced rangefinder cameras project into

696-830: A revival of rangefinder cameras. Aside from the Leica M series, rangefinder models from this period include the Konica Hexar RF , Cosina , who makes the Voigtländer Bessa T/R/R2/R3/R4 (the last three are made in both manual or aperture automatic version, which use respectly the "m" or "a" sign in model), and the Hasselblad Xpan/Xpan 2. Zeiss had a new model called the Zeiss Ikon, also made by Cosina but now discontinued, while Nikon has also produced expensive limited editions of its S3 and SP rangefinders to satisfy

783-598: A telegram. Mao accepted the decision made by Kim and Stalin to unify Korea but cautioned Kim over possible US intervention. Soviet generals with extensive combat experience from World War II were sent to North Korea as the Soviet Advisory Group. They completed plans for attack by May and called for a skirmish to be initiated in the Ongjin Peninsula on the west coast of Korea. The North Koreans would then launch an attack to capture Seoul and encircle and destroy

870-657: Is most used in Taiwan (Republic of China), Hong Kong and Macau . In the US, the war was initially described by President Harry S. Truman as a " police action " as the US never formally declared war and the operation was conducted under the auspices of the UN. It has been sometimes referred to in the English-speaking world as "The Forgotten War" or "The Unknown War" because of the lack of public attention it received relative to World War II and

957-502: Is no moving mirror, as used in SLRs, there is no momentary blackout of the subject being photographed. Rangefinder viewfinders usually have a field of view slightly greater than the lens in use. This allows the photographer to be able to see what is going on outside of the frame, and therefore better anticipate the action, at the expense of a smaller image. In addition, with viewfinders with magnifications larger than 0.8x (e.g. some Leica cameras,

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1044-547: Is not customary to speak of this functionality as a rangefinder. The first rangefinders, sometimes called "telemeters", appeared in the twentieth century; the first rangefinder camera to be marketed was the 3A Kodak Autographic Special of 1916; the rangefinder was coupled. Not itself a rangefinder camera, the Leica I of 1925 had popularized the use of accessory rangefinders. The Leica II and Zeiss Contax I, both of 1932, were great successes as 35 mm rangefinder cameras, while on

1131-467: Is overrun by unprovoked armed attack would start a disastrous chain of events leading most probably to world war." While there was hesitance by some in the US government to get involved, considerations about Japan fed into the decision to engage on behalf of South Korea. After the fall of China to the communists, US experts saw Japan as the region's counterweight to the Soviet Union and China. While there

1218-412: Is too large or obtrusive. However, today mirrorless digital cameras are capable of excellent low light performance, are much smaller and completely silent. The absence of a mirror allows the rear element of lenses to project deep into the camera body, making high-quality wide-angle lenses easier to design. The Voigtländer 12 mm lens is the widest-angle rectilinear lens in general production, with

1305-907: The Burma campaign (1941-45). The communists, led by, among others, Kim Il Sung , fought the Japanese in Korea and Manchuria . At the Cairo Conference in 1943, China, the UK, and the US decided that "in due course, Korea shall become free and independent". At the Tehran Conference in 1943 and the Yalta Conference in February 1945, the Soviet Union promised to join its allies in the Pacific War within three months of

1392-605: The Contax G . Digital imaging technology was applied to rangefinder cameras for the first time in 2004, with the introduction of the Epson R-D1 , the first ever digital rangefinder camera. The RD-1 was a collaboration between Epson and Cosina . The R-D1 and later R-D1s use Leica M-mount lenses, or earlier Leica screw mount lenses with an adapter. After the discontinuation of the R-D1, only Leica M digital rangefinders were in production until

1479-525: The Epson RD-1/s , Canon 7 , Nikon S, and in particular the Voigtländer Bessa R3A and R3M with their 1:1 magnification), photographers can keep both eyes open and effectively see a floating viewfinder frame superimposed on their real world view. This kind of two-eyed viewing is also possible with an SLR, using a lens focal length that results in a net viewfinder magnification close to 1.0 (usually

1566-494: The Leica M (Typ 240) digital rangefinder, which adds live preview, video recording and focusing assistance, the Leica M Monochrom , which is similar to the Leica M9 but shoots solely in black and white , the Leica M Edition 60 which is similar to the M (Typ 240) but omits a rear display panel as a homage to film cameras, and the M10 and M11 without video recording. The viewfinder of

1653-529: The Leica Standard , also introduced in 1932, the rangefinder was omitted. The Contax II (1936) integrated the rangefinder in the center of the viewfinder. Rangefinder cameras were common from the 1930s to the 1970s, but the more advanced models lost ground to single-lens reflex (SLR) cameras. Rangefinder cameras have been made in all sizes and all film formats over the years, from 35 mm through medium format (rollfilm) to large-format press cameras. Until

1740-696: The People's Republic of China and the Soviet Union , while South Korea was supported by the United Nations Command (UNC) led by the United States . The conflict was the first major proxy war of the Cold War . Fighting ended in 1953 with an armistice but no peace treaty , leading to the ongoing Korean conflict . After the end of World War II in 1945, Korea, which had been a Japanese colony for 35 years,

1827-773: The Vietnam War . Imperial Japan diminished the influence of China over Korea in the First Sino-Japanese War (1894–95). A decade later, after defeating Imperial Russia in the Russo-Japanese War , Japan made the Korean Empire its protectorate with the Eulsa Treaty in 1905, then annexed it with the Japan–Korea Treaty of 1910 . Many Korean nationalists fled the country. The Provisional Government of

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1914-777: The Yalu River —the border with China. On 19 October, the Chinese People's Volunteer Army (PVA) crossed the Yalu and entered the war on the side of the north. UN forces retreated from North Korea in December, following the PVA's first and second offensive . Communist forces captured Seoul again in January 1951 before losing it to a UN counter-offensive two months later. After an abortive Chinese spring offensive , UN forces retook territory roughly up to

2001-485: The depth of field for a given aperture, which is not possible with a rangefinder design. To compensate for this, rangefinder users often use zone focusing , which is especially applicable to the rapid-fire approach to street photography. Larger lenses may block a portion of the view seen through the viewfinder, potentially a significant proportion. A side effect of this is that lens designers are forced to use smaller designs. Lens hoods used for rangefinder cameras may have

2088-557: The victory in Europe . The USSR declared war on Japan and invaded Manchuria on 8 August 1945. By 10 August, the Red Army had begun to occupy the north of Korea. On 10 August in Washington , US Colonels Dean Rusk and Charles H. Bonesteel III were assigned to divide Korea into Soviet and US occupation zones and proposed the 38th parallel as the dividing line. This was incorporated into

2175-433: The 1960s many fixed-lens 35 mm rangefinder cameras for the amateur market were produced by several manufacturers, mainly Japanese, including Canon , Fujica , Konica , Mamiya , Minolta , Olympus , Petri Camera , Ricoh , and Yashica . Distributors such as Vivitar and Revue often sold rebranded versions of these cameras. While designed to be compact like the Leica, they were much less expensive. Many of them, such as

2262-515: The 38th parallel. Armistice negotiations began in July 1951, but dragged on as the fighting became a war of attrition and the north suffered heavy damage from U.S. bombing . Combat ended on 27 July 1953 with the signing of the Korean Armistice Agreement , which allowed the exchange of prisoners and created a 4-kilometre (2.5 mi) wide Demilitarized Zone (DMZ) along the frontline, with

2349-737: The Chinese Civil War, while US forces remained stationed in South Korea. By spring 1950, he believed that the strategic situation had changed: PLA forces under Mao Zedong had secured final victory, US forces had withdrawn from Korea, and the Soviets had detonated their first nuclear bomb , breaking the US monopoly. As the US had not directly intervened to stop the communists in China, Stalin calculated they would be even less willing to fight in Korea, which had less strategic significance. The Soviets had cracked

2436-558: The Japanese surrender south of the 38th parallel. Appointed as military governor, Hodge directly controlled South Korea as head of the United States Army Military Government in Korea (USAMGIK 1945–48). In December 1945, Korea was administered by a US–Soviet Union Joint Commission , as agreed at the Moscow Conference , to grant independence after a five-year trusteeship. Waiting five years for independence

2523-603: The Konica M-Hexanon Dual or Leica Tri-Elmar, let the user select among two or three focal lengths; the viewfinder must be designed to work with all focal lengths of any lens used. The rangefinder may become misaligned, leading to incorrect focusing. Rangefinder cameras are often quieter, particularly with leaf shutters , and smaller than competing SLR models. These qualities once made rangefinders more attractive for theater photography, some portrait photography, candid and street photography , and any application where an SLR

2610-784: The Leica thread mount. (From late 1951 they were completely compatible; the 7 and 7s had a bayonet mount for the 50 mm f/0.95 lens in addition to the thread mount for other lenses.) Launched in 1940, The Kodak 35 Rangefinder was the first 35 mm camera made by the Eastman Kodak Company. Other such cameras include the Casca ( Steinheil , West Germany, 1948), Detrola 400 (USA, 1940–41), Ektra ( Kodak , USA, 1941–8), Foca ( OPL , France, 1947–63), Foton ( Bell & Howell , USA, 1948), Opema II ( Meopta , Czechoslovakia, 1955–60), Perfex (USA, 1938–49), Robot Royal (Robot-Berning, West Germany, 1955–76), and Witness ( Ilford , Britain, 1953). In

2697-520: The Minolta 7sII and the Vivitar 35ES, were fitted with high-speed, extremely high quality optics. Though eventually replaced in the market with newer compact autofocus cameras , many of these older rangefinders continue to operate, having outlived most of their newer (and less well-constructed) successors. Starting with a camera made by the small Japanese company Yasuhara in the 1990s, there has been something of

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2784-724: The North Korean government with matériel and manpower. According to Chinese sources, the North Koreans donated 2,000 railway cars worth of supplies while thousands of Koreans served in the Chinese PLA during the war. North Korea also provided the Chinese Communists in Manchuria with a safe refuge for non-combatants and communications with the rest of China. As a token of gratitude, between 50,000 and 70,000 Korean veterans who served in

2871-456: The North. On 28 June, Rhee ordered the massacre of suspected political opponents in his own country. In five days, the ROK, which had 95,000 troops on 25 June, was down to less than 22,000 troops. In early July, when US forces arrived, what was left of the ROK was placed under US operational command of the United Nations Command . The Truman administration was unprepared for the invasion. Korea

2958-566: The PLA were sent back along with their weapons, and they later played a significant role in the initial invasion of South Korea. China promised to support the North Koreans in the event of a war against South Korea. By 1948, a North Korea-backed insurgency had broken out in the southern half of the peninsula. This was exacerbated by the undeclared border war between the Koreas, which saw division-level engagements and thousands of deaths on both sides. The ROK

3045-547: The ROK had 98,000 soldiers (65,000 combat, 33,000 support), no tanks (they had been requested from the U.S. military, but requests were denied), and a 22-plane air force comprising 12 liaison-type and 10 AT-6 advanced-trainer airplanes. Large U.S. garrisons and air forces were in Japan, but only 200–300 U.S. troops were in Korea. At dawn on 25 June 1950, the KPA crossed the 38th parallel behind artillery fire. It justified its assault with

3132-524: The ROK. The final stage would involve destroying South Korean government remnants and capturing the rest of South Korea, including the ports. On 7 June 1950, Kim called for a Korea-wide election on 5–8 August 1950 and a consultative conference in Haeju on 15–17 June. On 11 June, the North sent three diplomats to the South as a peace overture, which Rhee rejected outright. On 21 June, Kim revised his war plan to involve

3219-519: The ROKA launched a three-pronged assault on the insurgents in South Cholla and Taegu . By March 1950, the ROKA claimed 5,621 guerrillas killed or captured and 1,066 small arms seized. This operation crippled the insurgency. Soon after, North Korea made final attempts to keep the uprising active, sending battalion-sized units of infiltrators under the commands of Kim Sang-ho and Kim Moo-hyon. The first battalion

3306-523: The Red Army halted at the 38th parallel for three weeks to await the arrival of US forces. On 7 September 1945, General Douglas MacArthur issued Proclamation No. 1 to the people of Korea, announcing US military control over Korea south of the 38th parallel and establishing English as the official language during military control. On 8 September, US Lieutenant General John R. Hodge arrived in Incheon to accept

3393-627: The Republic of Korea was founded in 1919 in Nationalist China . It failed to achieve international recognition, failed to unite the nationalist groups, and had a fractious relationship with its US-based founding president, Syngman Rhee . In China, the nationalist National Revolutionary Army and the communist People's Liberation Army (PLA) helped organize Korean refugees against the Japanese military, which had also occupied parts of China. The Nationalist-backed Koreans, led by Yi Pom-Sok , fought in

3480-451: The Republic of Korea. On 27 June President Truman ordered U.S. air and sea forces to help. On 4 July the Soviet deputy foreign minister accused the U.S. of starting armed intervention on behalf of South Korea. The Soviet Union challenged the legitimacy of the war for several reasons. The ROK intelligence upon which Resolution 83 was based came from US Intelligence; North Korea was not invited as

3567-481: The South Korean interior intensified; persistent operations, paired with worsening weather, denied the guerrillas sanctuary and wore away their fighting strength. North Korea responded by sending more troops to link up with insurgents and build more partisan cadres; North Korean infiltrators had reached 3,000 soldiers in 12 units by the start of 1950, but all were destroyed or scattered by the ROKA. On 1 October 1949,

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3654-470: The South from 5,000 to 1,000. However, Kim Il Sung believed widespread uprisings had weakened the South Korean military and that a North Korean invasion would be welcomed by much of the South Korean population. Kim began seeking Stalin's support for an invasion in March 1949, traveling to Moscow to persuade him. Stalin initially did not think the time was right for a war in Korea. PLA forces were still embroiled in

3741-435: The South, armed by the U.S. military with mostly small arms, but no heavy weaponry. Several generals, such as Lee Kwon-mu , were PLA veterans born to ethnic Koreans in China. While older histories of the conflict often referred to these ethnic Korean PLA veterans as being sent from northern Korea to fight in the Chinese Civil War before being sent back, recent Chinese archival sources studied by Kim Donggill indicate that this

3828-693: The South. The ROK was being trained by the US Korean Military Advisory Group (KMAG). On the eve of the war, KMAG commander General William Lynn Roberts voiced utmost confidence in the ROK and boasted that any North Korean invasion would merely provide "target practice". For his part, Syngman Rhee repeatedly expressed his desire to conquer the North, including when US diplomat John Foster Dulles visited Korea on 18 June. Though some South Korean and US intelligence officers predicted an attack, similar predictions had been made before and nothing had happened. The Central Intelligence Agency noted

3915-633: The Soviet Kiev ), Nikon S-series cameras from 1951 to 1962 (with design inspired by the Contax and function by the Leica), and Leica M-series cameras. The Nikon rangefinder cameras were "discovered" in 1950 by Life magazine photographer David Douglas Duncan , who covered the Korean War . Canon manufactured several models from the 1930s until the 1960s; models from 1946 onwards were more or less compatible with

4002-665: The Soviet Union would not move against US forces in Korea. The Truman administration believed it could intervene in Korea without undermining its commitments elsewhere. On 25 June 1950, the United Nations Security Council unanimously condemned the North Korean invasion of South Korea with Resolution 82 . The Soviet Union, a veto-wielding power , had boycotted Council meetings since January 1950, protesting Taiwan 's occupation of China's permanent seat . The Security Council, on 27 June 1950, published Resolution 83 recommending member states provide military assistance to

4089-725: The Soviets agreed to the establishment of a communist government led by Kim Il Sung. The 1948 North Korean parliamentary elections took place in August. The Soviet Union withdrew its forces in 1948 and the US in 1949. With the end of the war with Japan , the Chinese Civil War resumed in earnest between the Communists and the Nationalist -led government. While the Communists were struggling for supremacy in Manchuria, they were supported by

4176-593: The US General Order No. 1 , which responded to the Japanese surrender on 15 August. Explaining the choice of the 38th parallel, Rusk observed, "Even though it was further north than could be realistically reached by U. S. [ sic ] forces in the event of Soviet disagreement ... we felt it important to include the capital of Korea in the area of responsibility of American troops". Joseph Stalin , however, maintained his wartime policy of cooperation, and on 16 August,

4263-418: The United States the dependable and cheap Argus (especially the ubiquitous C-3 "Brick" ) was far and away the most popular 35 mm rangefinder, with millions sold. Interchangeable-lens rangefinder cameras with focal-plane shutters are greatly outnumbered by fixed-lens leaf-shutter rangefinder cameras. The most popular design in the 1950s were folding designs like the Kodak Retina and the Zeiss Contessa. In

4350-420: The area to that end. The Truman administration still refrained from committing troops on the ground, because advisers believed the North Koreans could be stopped by air and naval power alone. The Truman administration was uncertain whether the attack was a ploy by the Soviet Union, or just a test of US resolve. The decision to commit ground troops became viable when a communiqué was received on 27 June indicating

4437-417: The border, starting in May 1949. Border clashes between South and North continued on 4 August 1949, when thousands of North Korean troops attacked South Korean troops occupying territory north of the 38th parallel. The 2nd and 18th ROK Infantry Regiments repulsed attacks in Kuksa-bong, and KPA troops were "completely routed". Border incidents decreased by the start of 1950. Meanwhile, counterinsurgencies in

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4524-443: The border, these guerrillas launched an offensive in September aimed at undermining the South Korean government and preparing the country for the KPA's arrival in force. This offensive failed. However, the guerrillas were now entrenched in the Taebaek-san region of the North Gyeongsang Province and the border areas of the Gangwon Province . While the insurgency was ongoing, the ROKA and KPA engaged in battalion-sized battles along

4611-434: The claim ROK troops attacked first and that the KPA were aiming to arrest and execute the "bandit traitor Syngman Rhee". Fighting began on the strategic Ongjin Peninsula in the west. There were initial South Korean claims that the 17th Regiment had counterattacked at Haeju; some scholars argue the claimed counterattack was instead the instigating attack, and therefore that the South Koreans may have fired first. However,

4698-466: The codes used by the US to communicate with their embassy in Moscow , and reading dispatches convinced Stalin that Korea did not have the importance to the US that would warrant a nuclear confrontation. Stalin began a more aggressive strategy in Asia based on these developments, including promising economic and military aid to China through the Sino-Soviet Treaty of Friendship, Alliance and Mutual Assistance . In April 1950, Stalin permitted Kim to attack

4785-412: The communist victory in the Chinese Civil War, ethnic Korean units in the PLA were sent to North Korea. In the fall of 1949, two PLA divisions composed mainly of Korean-Chinese troops (the 164th and 166th ) entered North Korea, followed by smaller units throughout the rest of 1949. The reinforcement of the KPA with PLA veterans continued into 1950, with the 156th Division and several other units of

4872-451: The defense of Italy and Greece, and the country was first on the list of the National Security Council 's post-North Korea invasion list of "chief danger spots". Truman believed if aggression went unchecked, a chain reaction would start that would marginalize the UN and encourage communist aggression elsewhere. The UN Security Council approved the use of force to help the South Koreans, and the US immediately began using air and naval forces in

4959-428: The demands of collectors and aficionados. Cameras from the former Soviet Union—the Zorki and FED , based on the screwmount Leica, and the Kiev —are plentiful in the used market. Medium-format rangefinder cameras continued to be produced until 2014. Recent models included the Mamiya 6 and 7I/7II, the Bronica RF645 and the Fuji G, GF, GS, GW and GSW series. In 1994, Contax introduced an autofocus rangefinder camera,

5046-509: The economic and military aid promised by the Soviets. Kathryn Weathersby cites Soviet documents which said Kim secured Mao's support. Along with Mark O'Neill, she says this accelerated Kim's war preparations. Chen Jian argues Mao never seriously challenged Kim's plans and Kim had every reason to inform Stalin that he had obtained Mao's support. Citing more recent scholarship, Zhao Suisheng contends Mao did not approve of Kim's war proposal and requested verification from Stalin, who did so via

5133-402: The effects they create need to be viewed directly. Korean War Korean Demilitarized Zone established Together: 1,742,000 The Korean War (25 June 1950 – 27 July 1953) was an armed conflict on the Korean Peninsula fought between North Korea (Democratic People's Republic of Korea; DPRK) and South Korea (Republic of Korea; ROK) and their allies. North Korea was supported by

5220-459: The former Fourth Field Army arriving in February; the PLA 156th Division was reorganized as the KPA 7th Division. By mid-1950, between 50,000 and 70,000 former PLA troops had entered North Korea, forming a significant part of the KPA's strength on the eve of the war's beginning. The combat veterans and equipment from China, the tanks, artillery, and aircraft supplied by the Soviets, and rigorous training increased North Korea's military superiority over

5307-472: The government and between 2,976 and 3,392 deaths. By May 1949, both uprisings had been crushed. Insurgency reignited in the spring of 1949 when attacks by guerrillas in the mountainous regions (buttressed by army defectors and North Korean agents) increased. Insurgent activity peaked in late 1949 as the ROKA engaged so-called People's Guerrilla Units. Organized and armed by the North Korean government, and backed by 2,400 KPA commandos who had infiltrated through

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5394-527: The government in the South, under the condition that Mao would agree to send reinforcements if needed. For Kim, this was the fulfillment of his goal to unite Korea. Stalin made it clear Soviet forces would not openly engage in combat, to avoid a direct war with the US Kim met with Mao in May 1950 and differing historical interpretations of the meeting have been put forward. According to Barbara Barnouin and Yu Changgeng, Mao agreed to support Kim despite concerns of American intervention, as China desperately needed

5481-462: The government. At 02:00 on 28 June the ROK blew up the Hangang Bridge across the Han River in an attempt to stop the KPA. The bridge was detonated while 4,000 refugees were crossing it, and hundreds were killed. Destroying the bridge trapped many ROK units north of the river. In spite of such desperate measures, Seoul fell that same day. Some South Korean National Assemblymen remained in Seoul when it fell, and 48 subsequently pledged allegiance to

5568-405: The grounds it would not be fair, and many South Korean politicians boycotted it. The 1948 South Korean general election was held in May. The resultant South Korean government promulgated a national political constitution on 17 July and elected Syngman Rhee as president on 20 July. The Republic of Korea (South Korea) was established on 15 August 1948. In the Soviet-Korean Zone of Occupation,

5655-684: The insurgent war and border clashes. The first socialist uprising occurred without direct North Korean participation, though the guerrillas still professed support for the northern government. Beginning in April 1948 on Jeju Island , the campaign saw arrests and repression by the South Korean government in the fight against the South Korean Labor Party, resulting in 30,000 violent deaths, among them 14,373 civilians, of whom ~2,000 were killed by rebels and ~12,000 by ROK security forces. The Yeosu–Suncheon rebellion overlapped with it, as several thousand army defectors waving red flags massacred right-leaning families. This resulted in another brutal suppression by

5742-688: The introduction of two additional rangefinders in late 2018: Both the Pixii and the Zenit M are true mechanical rangefinders, and they employ the Leica M mount, affording compatibility with current lens lines from Voigtlander , Zeiss , and Leica themselves. Leica released its first digital rangefinder camera, the Leica M8 , in 2006. The M8 and R-D1 are expensive compared to more common digital SLRs , and lack several features that are common with modern digital cameras, such as autofocus, live preview, movie recording, and face detection. They have no real telephoto lenses available beyond 135 mm focal length and very limited macro ability. Later, Leica released

5829-439: The invasion force, the North had 114 fighters, 78 bombers, 105 T-34-85 tanks, and some 30,000 soldiers stationed in reserve in North Korea. Although each navy consisted of only several small warships, the North and South Korean navies fought in the war as seaborne artillery for their armies. In contrast, the South Korean population was estimated at 20 million, but its army was unprepared and ill-equipped. As of 25 June 1950,

5916-409: The lens". This eliminates parallax errors at any subject distance, thus allowing for macro photography . It also removes the need to have separate viewfinders for different lens focal lengths. In particular, this allows for extreme telephoto lenses which would otherwise be very hard to focus and compose with a rangefinder. Furthermore, the through-the-lens view allows the viewfinder to directly display

6003-806: The mid-1950s most were generally fitted to more expensive models of cameras. Folding bellows rollfilm cameras, such as the Balda Super Baldax or Mess Baldix, the Kodak Retina II, IIa, IIc, IIIc, and IIIC cameras and the Hans Porst Hapo 66e (a cheaper version of the Balda Mess Baldix), were often fitted with rangefinders. The best-known rangefinder cameras take 35 mm film , use focal plane shutters , and have interchangeable lenses. These are Leica screwmount (also known as M39) cameras developed for lens manufacturer Ernst Leitz Wetzlar by Oskar Barnack (which gave rise to very many imitations and derivatives), Contax cameras manufactured for Carl Zeiss Optics by camera subsidiary Zeiss-Ikon and, after Germany's defeat in World War II, produced again and then developed as

6090-436: The rangefinder was incorporated into the viewfinder. More modern designs have rangefinders coupled to the focusing mechanism so that the lens is focused correctly when the rangefinder images fuse; compare with the focusing screen in non- autofocus SLRs . Almost all digital cameras , and most later film cameras, measure distance using electroacoustic or electronic means and focus automatically ( autofocus ); however, it

6177-442: The report that contained the Haeju claim contained errors and outright falsehoods. KPA forces attacked all along the 38th parallel within an hour. The KPA had a combined arms force including tanks supported by heavy artillery. The ROK had no tanks, anti-tank weapons, or heavy artillery. The South Koreans committed their forces in a piecemeal fashion, and these were routed in a few days. On 27 June, Rhee evacuated Seoul with some of

6264-496: The same subject, one of which moves when a calibrated wheel is turned; when the two images coincide and fuse into one, the distance can be read off the wheel. Older, non-coupled rangefinder cameras display the focusing distance and require the photographer to transfer the value to the lens focus ring; cameras without built-in rangefinders could have an external rangefinder fitted into the accessory shoe . Earlier cameras of this type had separate viewfinder and rangefinder windows; later

6351-448: The segment of the war after the intervention of the People's Volunteer Army is commonly and officially known as the "Resisting America and Assisting Korea War" ( Chinese : 抗美援朝战争 ; pinyin : Kàngměi Yuáncháo Zhànzhēng ), although the term " Chosŏn War" ( Chinese : 朝鮮戰爭 ; pinyin : Cháoxiǎn Zhànzhēng ) is sometimes used unofficially. The term " Hán (Korean) War" ( Chinese : 韓戰 ; pinyin : Hán Zhàn )

6438-494: The southward movement by the KPA but assessed this as a "defensive measure" and concluded an invasion was "unlikely". On 23 June UN observers inspected the border and did not detect that war was imminent. Chinese involvement was extensive from the beginning, building on previous collaboration between the Chinese and Korean communists during the Chinese Civil War. Throughout 1949 and 1950, the Soviets continued arming North Korea. After

6525-483: The viewer will not be totally even, but rather leaning on one side. This issue can be avoided by shooting in vertical (i.e. portrait) orientation, shooting style and framing allowing. If filters that absorb much light or change the colour of the image are used, it is difficult to compose, view, and focus on an SLR, but the image through a rangefinder viewfinder is unaffected. On the other hand, some filters, such as graduated filters and polarizers, are best used with SLRs as

6612-403: The viewfinder a brightline frame that moves as the lens is focused, correcting parallax error down to the minimum distance at which the rangefinder functions. The angle of view of a given lens also changes with distance, and the brightline frames in the finders of a few cameras automatically adjust for this as well. In contrast, the viewfinder pathway of an SLR transmits an image directly "through

6699-591: The war a frozen conflict . In South Korea, the war is usually referred to as the "625 War" ( 6·25 전쟁 ; 六二五戰爭 ), the "625 Upheaval" ( 6·25 동란 ; 六二五動亂 ; yugio dongnan ), or simply "625", reflecting the date of its commencement on 25 June. In North Korea, the war is officially referred to as the Fatherland Liberation War ( Choguk haebang chŏnjaeng ) or the Chosŏn [Korean] War ( 조선전쟁 ; Chosŏn chŏnjaeng ). In mainland China,

6786-558: Was divided by the Soviet Union and the US into two occupation zones at the 38th parallel , with plans for a future independent state. Due to political disagreements and influence from their backers, the zones formed their own governments in 1948. The DPRK was led by Kim Il Sung in Pyongyang , and the ROK by Syngman Rhee in Seoul ; both claimed to be the sole legitimate government of all of Korea and engaged in border clashes as internal unrest

6873-414: Was almost entirely trained and focused on counterinsurgency, rather than conventional warfare. They were equipped and advised by a force of a few hundred American officers, who were successful in helping the ROKA to subdue guerrillas and hold its own against North Korean military (Korean People's Army, KPA) forces along the 38th parallel. Approximately 8,000 South Korean soldiers and police officers died in

6960-599: Was captured on 28 June, and by early August, the Republic of Korea Army (ROKA) and its allies were nearly defeated, holding onto only the Pusan Perimeter in the peninsula's southeast. On 15 September, UN forces landed at Inchon near Seoul, cutting off KPA troops and supply lines. UN forces broke out from the perimeter on 18 September, re-captured Seoul, and invaded North Korea in October, capturing Pyongyang and advancing towards

7047-544: Was fomented by communist groups in the south. On 25 June 1950, the Korean People's Army (KPA), equipped and trained by the Soviets, launched an invasion of the south. In the absence of the Soviet Union's representative, the UN Security Council denounced the attack and recommended member states to repel the invasion. UN forces comprised 21 countries, with the US providing around 90% of military personnel. Seoul

7134-493: Was no US policy dealing with South Korea directly as a national interest, its proximity to Japan increased its importance. Said Kim: "The recognition that the security of Japan required a non-hostile Korea led directly to President Truman's decision to intervene ... The essential point ... is that the American response to the North Korean attack stemmed from considerations of U.S. policy toward Japan." Another consideration

7221-401: Was not included in the strategic Asian Defense Perimeter outlined by United States Secretary of State Dean Acheson . Military strategists were more concerned with the security of Europe against the Soviet Union than that of East Asia . The administration was worried a war in Korea could quickly escalate without American intervention. Diplomat John Foster Dulles stated: "To sit by while Korea

7308-770: Was not the case. Rather, the soldiers were indigenous to China, as part of China's longstanding ethnic Korean community, and were recruited to the PLA in the same way as any other Chinese citizen. According to the first official census in 1949, the population of North Korea numbered 9,620,000, and by mid-1950, North Korean forces numbered between 150,000 and 200,000 troops, organized into 10 infantry divisions, one tank division, and one air force division, with 210 fighter planes and 280 tanks, who captured scheduled objectives and territory, among them Kaesong, Chuncheon , Uijeongbu , and Ongjin. Their forces included 274 T-34-85 tanks, 200 artillery pieces, 110 attack bombers, 150 Yak fighter planes, and 35 reconnaissance aircraft. In addition to

7395-498: Was reduced to a single man over the course of engagements by the ROKA 8th Division . The second was annihilated by a two-battalion hammer-and-anvil maneuver by units of the ROKA 6th Division , resulting in a toll of 584 KPA guerrillas (480 killed, 104 captured) and 69 ROKA troops killed, plus 184 wounded. By the spring of 1950, guerrilla activity had mostly subsided; the border, too, was calm. By 1949, South Korean and US military actions had reduced indigenous communist guerrillas in

7482-595: Was the Soviet reaction if the US intervened. The Truman administration was fearful a Korean war was a diversionary assault that would escalate to a general war in Europe once the US committed in Korea. At the same time, "[t]here was no suggestion from anyone that the United Nations or the United States could back away from [the conflict]". Yugoslavia —a possible Soviet target because of the Tito-Stalin split —was vital to

7569-678: Was unpopular among Koreans, and riots broke out. To contain them, the USAMGIK banned strikes on 8 December and outlawed the PRK Revolutionary Government and People's Committees on 12 December. Following further civilian unrest, the USAMGIK declared martial law . Citing the inability of the Joint Commission to make progress, the US government decided to hold an election under UN auspices to create an independent Korea. The Soviet authorities and Korean communists refused to cooperate on

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