This Automatic Extension Tube is specially designed to work with CAN. EF/ EF-S mount lenses and cameras, which enables your lens to focus closer than its normal set minimum focusing distance. The focusing distance shortens by placing a space between your camera body and lens, and your subject magnifies. The automatic extension tube is exceptionally useful for macro photography and sometimes for closeup portraits, enabling you to convert almost any lens into a macro lens at a fraction of the cost while maintaining its original optical quality.
The kit contains two tubes of different lengths, 12mm and 25mm. You can use it individually or in combination to obtain the desired magnification. The actual magnification effect changes with each specific lens.
The integrated gold-plated contacts maintain full autofocus and auto-exposure functionality. And the extension tubes have no optical elements, which will not degrade the quality of images. In addition, the metal bayonet provides years of reliable use.
It comes with a body cap and a rear lens cap for better protection when unused. And an included storage pouch with a drawstring and a carabiner is for easier storage and transportation.