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Praktica BCA from the late 1980s Sample picture made by Praktica camcorder DVC 10.1 HDMI in LW resolution. 1956 Praktica FX2 by VEB Kamera-Werke Dresden-Niedersedlitz is the first 35 mm single-lens reflex camera with diaphragm stop-down actuation mechanism built inside the lens mount
Binoculars with high magnification and heavy weight usually require some sort of mount to stabilize the image. A magnification of 10x is generally considered the practical limit for observation with handheld binoculars. Binoculars more powerful than 15×70 require support of some type.
The Praktica IV is a 35mm SLR with M42 thread mount that was launched by Kamera-Werkstätten (KW) in 1959. The Praktica IV was based on the Praktina FX, and was actually the first Praktica to have a fixed pentaprism. It was the last model marketed by KW, before the company was bought by Pentacon
Praktica EE2 SLR black Electronics of the Praktica EE2. The Praktica EE2 was an important innovation of the 2-L generation. It was a camera with "fully electronic, full aperture TTL metering SLR" or "camera-computer". This camera had an electronic time control between 1 sec and 1/1000s and an electronic aperture simulation.
This version is known as the Praktiflex II by collectors. The lens mount is at first the 40mm screw, but later cameras have the new 42mm lens mount, first used on the Contax S and the Praktica of 1949, since production lasted until 1951. [7]
The forward-facing eyes of a bird of prey give binocular vision, which is assisted by a double fovea. [4] The raptor's adaptations for optimum visual resolution (an American kestrel can see a 2–mm insect from the top of an 18–m tree) has a disadvantage in that its vision is poor in low light level, and it must roost at night. [1]
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