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2. Macro photography - Wikipedia

   en.wikipedia.org/wiki/Macro_photography

   Ring flashes, with flash tubes arranged in a circle around the front of the lens, can be helpful in lighting at close distances. [34] Ring lights have emerged, using white LEDs to provide a continuous light source for macro photography, however they are not as bright as a ring flash and the white balance is very cool. [35]

3. Ring flash - Wikipedia

   en.wikipedia.org/wiki/Ring_flash

   An LED-based ring flash. A ring flashis a circular light that is often operated with a camera lens in the center to take photographs. Unlike point light sources, a ring flash can illuminate a subject with minimal shadows by closely and evenly surrounding the optical axisof the camera lens.

4. Canon EOS flash system - Wikipedia

   en.wikipedia.org/wiki/Canon_EOS_flash_system

   The EOS flash system is capable of wireless multiple flash control, whereby a master flash unit IR (ST-E2) or RF (ST-E3-RT) transmitter mounted on the camera body can control up to 3 (optical) or 5 (radio) groups of flash units. The Canon EOS 7D is the first Canon body to be able to control Speedlites wirelessly without the use of a Master ...

5. Canon's latest EOS M lens has a built-in ring flash - AOL

   www.aol.com/news/2016-05-12-canons-eos-m-mirror...

   It's the first EF-M macro lens, and only the eighth native model in the family so far. What's more, the lens is has a very unique design with a dual "ring flash" attached to the end.

6. Canon EF-M 28mm Macro lens - Wikipedia

   en.wikipedia.org/wiki/Canon_EF-M_28mm_Macro_lens

   Technical information. The Canon EF-M 28mm f/3.5 Macro IS STM the first wide angle Macro lens in the Canon lineup. It has an integrated ring light, which is useful for macro photography. It can be use as ring light or as left / right light. The macro light is hidden if the lens hood is in place. The minimum focus distance is 97 mm and 93 mm at ...

7. Stereo Realist - Wikipedia

   en.wikipedia.org/wiki/Stereo_Realist

   The Macro Realist a.k.a. model 1060 had the same body as the regular Stereo Realist but was a completely different camera. The Macro Realist was designed to stereograph subjects that are 4 to 5 ½ inches away. [4] It was invented by Clarence G. Henning. [39] Unlike the regular Realist, it had fixed focus and fixed aperture. [4]