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9-400: It has a focal plane cloth shutter, with speeds B, 1 ⁄ 30 , 1 ⁄ 2 , 1 ⁄ 4 , 1 ⁄ 8 , 1 ⁄ 15 , 1 ⁄ 60 , 1 ⁄ 125 , 1 ⁄ 250 and 1 ⁄ 500 sec. Change shutter speed only after shutter cocked Dimension: 100 mm × 64 mm × 32 mm (3.9 in × 2.5 in × 1.3 in) – similar to

18-449: A different M39 × 24 tpi thread mount, called "J-mount". True LTM lenses have a flange focal distance of 28.8 mm, though this is of little importance for lenses used on bellows enlargers. The Soviets later adopted the LTM mount for their Zenit single-lens-reflex (SLR) cameras, though with the longer optical registration of 45.2 mm, required to allow the mirror room to flip out of

27-580: A run of Leitz cameras by A. O. Roth in London. The test marketing program was a success, so regular production with Leitz camera bodies and lenses was introduced on the Leica II , and featured on the Leica Standard and Leica III . Until the 1950s the 39 mm mount was the norm for exchangeable lenses in rangefinder cameras . The high cost of quality lenses led to the dual use camera/enlarger of

36-399: Is a screw thread mounting system for attaching lenses to 35 mm cameras , primarily rangefinder (RF) Leicas . It is also the most common mount for Photographic enlarger lenses. True Leica Thread-Mount (LTM) is 39 mm in diameter and has a thread of 26 turns-per-inch or threads-per-inch (tpi) (approximately 0.977 mm pitch) of Whitworth thread form. Whitworth threads were then

45-537: The Rollei 35s in size) Weight: 320 g (11 oz) – lighter than the Rollei 35s at 370 g (13 oz) Tripod socket: 3 ⁄ 8 inch The standard lens is a four-element three-group Tessar type lens: Vega 35 mm/2.8, there are also 5-element 4-group MIR5 28/2.8,MIR6 28/2, and JUPITER 50/2. An early model of the Narciss is equipped with Industar-60 35 mm/2.8 lens. Three models were available;

54-527: The focal path when a picture was taken. The mount was developed by Oskar Barnack at Leica to provide a system that would allow for the exchange of lenses on their new small film cameras (Leica Type 1 and Leica Type 2), as Zeiss Ikon had indicated that their forthcoming Contax rangefinder cameras would have interchangeable lenses. The LTM system was tested at the request of Leitz on lenses manufactured in small batches by Hugo Meyer in Germany and marketed with

63-579: The lenses, hence the fact that enlargers also accept 39 mm lenses. Currently, Cosina in Japan — many of whose recent products are marketed under the Voigtländer brand — and FED in Ukraine continue to produce camera bodies using a true Leica thread-mount. These give amateurs the rare chance of having a very professional camera by combining a used Leica lens with an M39 body at a price well below

72-437: The most common was the chrome-top black-body model, rarer was the chrome-top white-body model, and the extremely rare grey-top model. Accessories: Genuine leather case, microscope adapter, M24 lens mount to M39 lens mount adapter for Zenit SLR lenses, with flange to film plane distance of 45.2 mm. M39 LTM mount with flange to film plane distance 28.8 mm not applicable. M39 lens mount The M39 lens mount

81-594: The norm in microscope manufacture. The Royal Microscopical Society (RMS) thread, also known as society thread , is a special 0.8" diameter x 36 tpi Whitworth thread used for microscope objective lenses and Leitz was a major manufacturer of microscopes, so the tooling at the plant was already set up to produce the Whitworth thread form. The Soviets in the 1930s produced their early FED cameras in M39×1 (39 mm by 1 mm DIN thread). Early Canon cameras also used

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