1. The flange focal distance of mount is 74.1 mm. 2. A display mounted somehow to user s eye has fixed focal distance . 3. The flange focal distance is for a C mount. 4. A recessed lens board effectively reduces the flange focal distance of a camera. 5. The smaller flange focal distance allows for more compact normal and wide angle lenses. 6. Typically this so-called flange focal distance is over on most interchangeable lens cameras. 7. Typically this so-called flange focal distance is over 40mm on most interchangeable lens cameras. 8. One refractor Coud?has a aperture and focal distance provided with Lyot's monochromatic filter for solar observation. 9. Generally speaking, cameras with a shorter flange focal distance can be adapted to a greater diversity of lenses. 10. Since a greater focal distance correlates to a less shallow DOF, the two factors cancel each other out exactly.
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