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The Visible light is located on the opposite side to the laser module, but cannot be activated with the laser in order to prevent white light discharge, and pollution. As part of the M27 IAR rollout in 2011, a number of standard accessories were chosen to be included with every M27, including an AN/PEQ-16 to allow for improved night and day ...
A twin-lens reflex camera (TLR) is a type of camera with two objective lenses of the same focal length. One of the lenses is the photographic objective or "taking lens" (the lens that takes the picture), while the other is used for the viewfinder system, [ 1 ] which is usually viewed from above at waist level.
AN/PEQ-2, AN/PEQ-2A, AN/PEQ-2B, AN/PEQ-2C [1] General Specifications; Weight: 210 g (excluding batteries and mount) IR Laser Specifications; IR Laser Class: I, IIIb: IR Laser Output : 25 mW: IR Laser Divergence : 0.3 mrad: IR Laser Wavelength : 830 nm: IR Illuminator Specifications; IR Illuminator Class: IIIb: IR Illuminator Output : 30 mW
Until the development of SLR, all cameras with viewfinders had two optical light paths: one through the lens to the film, and another positioned above (TLR or twin-lens reflex) or to the side (rangefinder). Because the viewfinder and the film lens cannot share the same optical path, the viewing lens is aimed to intersect with the film lens at a ...
Mamiya TLR lenses. There are seven Mamiya Sekor lenses: 2 wide-angle lenses 55 mm f /4.5 and 65 mm f /3.5 2 normal lenses 80 mm f /2.8 and 105 mm f /3.5 3 telephoto lenses 135 mm f /4.5, 180 mm f /4.5, and 250 mm f /6.3. Every lens has its own Seikosha shutter system with a shutter speed of B, 1' -1/500 or 1/400 sec, X or M flash ...
Olympus OM-2 (Japan): first SLR with TTL, off-the-film (OTF) flash autoexposure. [474] Had two rearward-facing silicon photodiodes in the mirror box to meter light reflecting off the film. [475] Circuitry could detect when enough light was exposed and automatically quench a specially "dedicated" accessory Olympus Quick Auto 310 electronic flash.
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