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Macro photography may also be accomplished by mounting a lens in reverse, in front of a normally mounted lens of greater focal length, using a macro coupler which screws into the front filter threads of both lenses. This method allows most cameras to maintain the full function of electronic and mechanical communication with the normally mounted ...
That distance is sometimes given on the filter in millimeters. A +3 close-up lens has a maximal working distance of 0.333 m or 333 mm. The magnification is the focal distance of the objective lens (f) divided by the focal distance of the close-up lens; i.e., the focal distance of the objective lens (in meters) multiplied by the diopter value (D) of the close-up lens:
It is sometimes called an old-fashioned three-point play to distinguish from the later three-point shot. [1] [2] And one is also sometimes used to refer to the extra free throw after a two-point basket. [3] In FIBA-sanctioned 3-on-3 play (branded as 3x3), a "three-point play" or "four-point play" is possible only under very limited ...
Ernesto "Che" Guevara [a] (14 June 1928 [1] – 9 October 1967) was an Argentine Marxist revolutionary, physician, author, guerrilla leader, diplomat, and military theorist.A major figure of the Cuban Revolution, his stylized visage has become a ubiquitous countercultural symbol of rebellion and global insignia in popular culture.
A parameterized macro is a macro that is able to insert given objects into its expansion. This gives the macro some of the power of a function. As a simple example, in the C programming language, this is a typical macro that is not a parameterized macro, i.e., a parameterless macro: #define PI 3.14159
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Aquatic macroinvertebrates are insects in their nymph and larval stages, snails, worms, crayfish, and clams that spend at least part of their lives in water. These insects play a large role in freshwater ecosystems by recycling nutrients as well as providing food to higher trophic levels.
Shot - Multi-projectile load, typically spherical or semi-spherical, best used in smoothbores Slug - A nose heavy design that uses air drag from a light hollowed base or wad to aid stability Pellet - (Specific) A self sealing, non-spherical projectile, typically designed to obturate with a rear skirt