[Phoenix (Steve)]

Hi Folks


I am using a PK to EOS adaptor to mount a 300mm Pentax lens to my old Canon 40D. The lens mounts securely to the camera with the adaptor, but the lens has a protruding aperture tab that is preventing me from using a clip-in light pollution filter because the tab hits the face of the filter once mounted in the camera body. Anyone know if there is a workaround? I could use a front filter, but at 77mm, it is an expensive option – also I am of the understanding that front filters don’t perform as well as clip-ins (I could be wrong).


Any help appreciated!


Thank you


Regards Steve