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Magic Lantern is a firmware add-on for various Canon digital single-lens reflex (DSLR) cameras and the EOS M. [2] It adds features for DSLR filmmaking and still photography, and is free and open-source. Magic Lantern was originally written for the Canon EOS 5D Mark II [3] by Trammell Hudson in 2009 after he reverse engineered its firmware. [1]
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.
Rolleiflex SL35 (black) with 50 mm f /1.8 Planar lens. The Rolleiflex SL35 was a line of 35mm SLR cameras which were developed and built by Rollei from the 1970s until the 1990s. The first camera in the range was the SL35, released in 1970 as the first 35mm SLR produced by Rollei. Compared to its competitors at that time, it was relatively ...
Auto-diaphragm lenses and instant return mirror, focal-plane shutter SLRs require precise camera-to-lens linkage, but can choreograph the entire shutter-button release, close lens, raise mirror, open shutter, close shutter, lower mirror, open lens exposure sequence [193] in as little as 1 ⁄ 8 th second.
Compared to most fixed-lens compact cameras, the most commonly used and inexpensive SLR lenses offer a wider aperture range and larger maximum aperture (typically f /1.4 to f /1.8 for a 50 mm lens). This allows photographs to be taken in lower light conditions without flash, and allows a narrower depth of field, which is useful for blurring the ...
The lenses typically used on DSLRs have a wider range of apertures available to them, ranging from as large as f / 0.9 to about f / 32. Lenses for smaller sensor cameras rarely have true available aperture sizes much larger than f / 2.8 or much smaller than f / 5.6.
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The most common type of focusing screen in non-autofocus 35 mm SLR cameras is the split screen and microprism ring variation that aids focusing and became standard in the 1980s. The microprism ring breaks up the image unless the lens setting is in focus, the split screen shows part of the image split in two pieces.
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