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This automatic macro Extension Tube Set DG II is 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 DG extension tubes have no optics. They are mounted in 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 CCD 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.
It comes as 25mm extension tube.
It is with electronic contacts,which make it support automatic focusing,automatic exposure,etc.
This tube is with 1/4" tripod mounts,which makes you able to locate in on a tripod to secure your lens.
2 caps (front and rear caps) included to protect the mounts.
Specification:
Diameter of the tubes: Approx. 62mm
Tube length: 25mm
metal mount part
Suitable for:
All EOS EF / EFS lens and camera with EF/EF-S mount
Package including:
Electronic automatic macro extension tube 25mm EF-25 DG II X 1
cap x 2
(in origial package)