First, K&F Concept ND2-ND400 lens filter allows changing shutter speed based on the effect you want with the best sensibility and the same aperture. Second, K&F Concept ND2-ND400 lens filter allows creating a blurred background with a large aperture while the shutter speed remains the same. Third, K&F Concept ND2-ND400 lens filter is designed to prevent overexposure and maintain image purity and quality at the same time. *Like a zoom lens, the variable nd filters are suitable for multiple shooting situations. If you're looking for perfect image quality, a fixed ND filter is recommended. 

67mm should also be stenciled on the front edge of the lens somewhere. If so, then you should be good to go. It should be on the lens because a lens cap can be lost or broken. 

Unfortunately this is for adapting lenses to Olympus' modern digital Micro 4/3 cameras. It won't work with the Pen FT or similar half-frame film cameras, and you most likely won't find anyone making adapters for these. 

FD-EOS fit for Canon FD mount lens and canon EF mount camera body. canon 60d is EF mount, so the adapter ring can work with your camera, but you need to check your lens mount. could you pls let us know your lens specific model? service(AT)kentfaith(DO NOT)com, Please note: It is not same between Canon FD mount and EF mount, this adapter ring is only for Canon FD mount lens, please contact us if you want to purchase for Canon EF mount lens. 

This issue could be improved according to following suggestions:

1. Q1: Camera shutter does not release when lens is attached
   A：The lens is fully manual and does not have electrical contacts. Please switch your camera to "M" (manual) mode
2. Q2: Images are too dark
   A：Lower the f-stop on the lens, and/or lower shutter speed, and/or raise ISO settings on camera
3. Q3: Images are too bright
   A：Raise the f-stop on the lens, and/or raise shutter speed, and/or raise ISO settings on camera
4. Q4: Images are not coming out in focus
   A：a) Adjust the focusing distance on the lens to the correct distance.
   b) In certain photographic situations, you may find it easier to focus at f/5.6-8 rather than f/3.5