1. The lens collar is designed and improved based on the original model E (B), only compatible with Canon RF 100mm f/2.8L Macro IS USM, cannot be used with other lenses. Like the original factory, it supports horizontal and vertical shooting. When shooting vertically, the lens can be rotated by loosening the knob; 2. The plastic ring is made of PC material and made from precise molds; the inner wall of the ring is designed with three bumps on the surface, corresponding to three notches on the surface of the lens; the plastic ring weighs about 10g;.
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