- With this adapter, you can use B4 2/3" CANON FUJINON Lens on Fujifilm X-Mount cameras such as X-pro1. - 2/3" lenses does not cover whole sensor of FX cameras, so you need to use the 2x extender, o/w you will see vignetting. - There is no ROM connection on the ring, so Automatic diaphragm, auto-focusing, or any other functions will not operate correctly while using this adapter. - It allows to infinity focus. - Fine finishing! Install, remove and operate lens smoothly! - Although the lens will fit physically, automatic diaphragm, auto-focusing, or any other functions will not operate correctly while using this adapter.
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