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Kenko/Canon Tube Set 12/20/36mm

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Description:

The Kenko Auto Extension Tube Set DG contains three tubes of different length--12mm, 20mm, and 36mm--which can be used individually or in any combination to obtain the desired magnification. Actual magnification effect changes with each specific lens.

Extension tubes are designed to enable a lens to focus closer than its normal set minimum focusing distance. Getting closer has the effect of magnifying your subject (making it appear larger in the viewfinder and in your pictures). They are exceptionally useful for macro photography, enabling you to convert almost any lens into a macro lens at a fraction of the cost while maintaining its original optical quality. The extension tubes have no optics.

They are mounted between the camera body and lens to create more distance between the lens and film plane. By moving the lens father away from the film or sensor in the camera, the lens is forced to focus much closer than normal. The greater the length of the extension tube, the closer the lens can focus. When using the camera's TTL metering system, no exposure compensation will be required (exposure compensation is required for handheld meters).

Retains AF function when effective aperture stays at f/5.6 or brighter(f/8 or brighter on 1D cameras).

Note: Not compatible with the Canon Digital-only EF-S lenses.



Specification:

Weight(g): 12mm Tube: 60

                  20mm Tube: 85

                  36mm Tube: 125