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The FE is a manual-focus SLR with manual exposure control or aperture-priority autoexposure, and electromechanical components. As such, the FE requires batteries (two S76 or A76, or LR44 or SR44, or one 1/3N) to power its electronically controlled shutter. The batteries also power the FE's "match-needle" exposure control system.
The PC System Design Guide (also known as the PC 97, PC 98, PC 99, or PC 2001 specification) is a series of hardware design requirements and recommendations for IBM PC compatible personal computers, compiled by Microsoft and Intel Corporation during 1997–2001. PC 99 introduced a color code for the various standard types of plugs and ...
3.5 mm TRRS (stereo-plus-mic) sockets became particularly common on smartphones, and have been used by Nokia and others since 2006, and as mentioned in the compatibility section, they are often compatible with standard 3.5 mm stereo headphones. Many computers, especially laptops, also include a TRRS headset socket compatible with the headsets ...
This had been used by Zeiss-Ikon in their mid-level cameras of their Contaflex series, and by Kodak in early interchangeable lenses for the top-end Retina series (later going to full lenses). Canon offered four lens options: 35mm f/3.5, 50mm f/1.8, 95mm f/3.5, and 125mm f/3.5.
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Most earlier FL and R series lenses are compatible with the F-1, though they must be used in stop-down metering mode. One exception is the FLP 38 mm F2.8, which was designed for the Canon Pellix . This lens' rear element extends further into the camera body than other FL-mount lenses, and would obstruct the moving mirror of the Canon F-1.
The Alteros GTX Series is a local area wireless microphone network that overcomes the line-of-sight problem by utilizing up to 64 transceivers around the performance area. It is also the only system employing Ultra WideBand pulsed RF technology which doesn't generate intermodulation products common with FM, QAM and GFSK modulated carriers used ...
Compatible third-party lenses with the EF lens mount are manufactured by Yongnuo, Samyang, Schneider, Sigma, Tamron, Tokina, Cosina and Carl Zeiss. The manufacturers of these lenses have reverse engineered the EOS electronics—except Zeiss, which does not have the rights to use the autofocus or the electronic aperture control of EOS cameras ...