Q:

Can Pentax and Canon mounts on Tamron lenses be swapped?

I have two Tamron lenses. Lens A has a mount ring for Canon, and Lens B has a mount ring for Pentax. Lens A is broken. Can I swap the mount rings and use lens B for my Canon camera?

A:

If your lenses are older Tamron Adaptall style lenses, then yes, you can remove the Canon FD ring and replace it with the Pentax K-mount ring and use the lens with pentax cameras.

