I now have 2 of these lenses. One for Canon (black) and one for Fuji (silver). I recently received a Fuji mount lens and noticed that the filter thread depth had changed from my old Eos m mount version. It's a little short to fully accept the filter. I tested 3 filters. fotasy and b+w don't fully enter the thread, while tiffen fully enters the thread but keeps spinning at the end without blocking. I returned my purchase and received a replacement and it is the same as the one returned. I went for it anyway because I love this lens so much. I wish 7artisans would fix this issue for a later version. Otherwise, I love every aspect of this lens. Its size and optical performance are perfect for my purpose.