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2. Infinity mirror - Wikipedia

   en.wikipedia.org/wiki/Infinity_mirror

   The infinity mirror (also sometimes called an infinite mirror) is a configuration of two or more parallel or angled mirrors, which are arranged to create a series of smaller and smaller reflections that appear to recede to infinity. [1] [2] Often the front mirror of an infinity mirror is half-silvered (a so-called one way mirror), but this is ...

3. Hyperfocal distance - Wikipedia

   en.wikipedia.org/wiki/Hyperfocal_distance

   Minox LX camera with hyperfocal red dot Nikon 28mm f /2.8 lens with markings for the depth of field. The lens is set at the hyperfocal distance for f /22. The orange mark corresponding to f /22 is at the infinity mark (∞). Focus is acceptable from under 0.7 m to infinity. Minolta 100–300 mm zoom lens. The depth of field, and thus hyperfocal ...

4. Flange focal distance - Wikipedia

   en.wikipedia.org/wiki/Flange_focal_distance

   Diagram illustrating the flange focal length of an SLR–type and a mirrorless–type camera. For an interchangeable lens camera, the flange focal distance (FFD) (also known as the flange-to-film distance, flange focal depth, flange back distance (FBD), flange focal length (FFL), back focus [1] or register, depending on the usage and source) of a lens mount system is the distance from the ...

5. Focal length - Wikipedia

   en.wikipedia.org/wiki/Focal_length

   The focal point F and focal length f of a positive (convex) lens, a negative (concave) lens, a concave mirror, and a convex mirror.. The focal length of an optical system is a measure of how strongly the system converges or diverges light; it is the inverse of the system's optical power.

6. Depth of field - Wikipedia

   en.wikipedia.org/wiki/Depth_of_field

   The orange mark corresponding to f /22 is at the infinity mark (∞). Focus is acceptable from under 0.7 m to infinity. Minolta 100–300 mm zoom lens. The depth of field, and thus hyperfocal distance, changes with the focal length as well as the f-stop. This lens is set to the hyperfocal distance for f /32 at a focal length of 100 mm.

7. The 25 most overrated films ever, ranked - AOL

   www.aol.com/news/25-most-overrated-films-ever...

   THE COUNTDOWN: Louis Chilton, Annabel Nugent, Adam White and Maira Butt select 25 of the most unduly celebrated films ever made