Subscribe to see EXIF info for this image (if available) Bought this lens, got it pretty cheap. Wanted to try it for video, turns out it’s a B4 mount. Had to buy an adapter for it. The adapter comes with a built in 2x extender, should make it usable on apsc without any vinyetting. Should make this lens about 28-330mm f1.7. Hopefully I will be able to detach the chords and mount box.