3mm with double side polishing technology no vignetting and the images still clarity even on telephotos lens
and can be easily placed in a pocket or bag
the focus is received
* Waterproof rating: IP65
brightness can be adjusted from 0%-100%
K&F Concept K&F M12101 Canon EF Lenses to Sony E Lens Mount Adapter Kids Camera 3mm with double side polishingAllow Canon EOS EF, EFS mount lenses used on Sony E NEX Alpha camera body. Compatible with Sony E NEX Alpha camera includes: Sony NEX 3, NEX 3C, NEX 3N, NEX 5, NEX 5C, NEX 5N, NEX 5R, NEX 5T, NEX 6, NEX 7, NEX C3, NEX F3, NEX VG10, a7, a7R, a9, a3000, a3500, a5000, a5100, a6000, a6300, a6500, a7S, a7 II, a7S II, a7R II, a7R III etc. Made of brass and aluminum. Stable,precise and durable construction. Manually operated. Infinity focus allowed. For