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Specifications: KOOKA AF Extension Tube Set can perfectly transform your Lens into a Macro Lens for great Macro shooting. It drives the lens by film or digital sensor and does not affect aperture and image quality. They are designed to enable a lens to focus closer than its normal set minimum focusing distance. It contains three tubes of different length, 12mm, 20mm, and 36mm, which can be used individually or in any combination to obtain the desired magnification. Desired with all the circuitry and mechanical coupling, these extension tubes are able to maintain autofocus and TTL auto exposure normally. The greater the length of the extension tube, the closer the lens can focus.
Features: The new RF-603 II is improved version of RF-603, it is a remote shutter release as well as a multi-functional flash trigger which can synchronously trigger flashes and studio strobes. It is perfect for creative photography.