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2. Extension tube - Wikipedia

   en.wikipedia.org/wiki/Extension_tube

   Extension tubes are sometimes confused with teleconverters, an optical component (i.e., containing lenses) designed to increase effective focal length. A close-up lens also enables focusing closer for macro photography but, unlike an extension tube, a close-up lens actually is an optical element.

3. Macro photography - Wikipedia

   en.wikipedia.org/wiki/Macro_photography

   True macro lenses, such as the Canon MP-E 65mm f/2.8 1-5x Macro, Laowa 25mm f/2.8 2.5-5X Ultra Macro (a relatively shorter focal length) or Minolta AF 3x-1x 1.7-2.8 Macro, can achieve higher magnification than life size, enabling photography of the structure of small insect eyes, snowflakes, and other minuscule objects. Others, such as the ...

4. Close-up lens - Wikipedia

   en.wikipedia.org/wiki/Close-up_lens

   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:

5. AOL Mail

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6. Week 12 Reactions: Oregon escapes upset & Georgia back ... - AOL

   www.aol.com/sports/week-12-reactions-oregon...

   Oregon Ducks quarterback Dillon Gabriel (8) scrambles durning a college football game between the Oregon Ducks and the Wisconsin Badgers on November 16th, 2024 at Barry Alvarez field inside Camp ...

7. Canon EF 100mm lens - Wikipedia

   en.wikipedia.org/wiki/Canon_EF_100mm_lens

   Despite the macro designation, the lens can focus to infinity like regular lenses. As such, it is appropriate for use as a portrait lens. This lens can be used with an extension tube, which increases the maximum magnification to 1.19× (EF 12 II) or 1.39× (EF 25 II). In these cases, focusing at infinity is sacrificed, with maximum distance ...