Concerning Problem: EF to M43 Fotodiox Adapter and a Sigma EF mount

Moshimo Garcia · January 30, 2016

Hey guys,

I made a post about this issue I am having in the "Lens" thread, but I didn't get an answer, so, I was hoping this being more visible might help me understand what is happening better.

I bought the Sigma 18-35 fairly recently (which I am in absolute love with btw) to use with my GH3. I purchased this Fotodiox to mount the lens to. This being my first time using an adapter, I wasn't sure if it was normal that attaching the lens to the mount didn't work as smoothly as attaching a lens into its native mount. I was switching lenses today, and to my dismay, I noticed that there were some TINY scratches on the metal part of the Sigma [see picture below] as well as some metal shavings that had accumulated at the bottom of my lens adapter.

Any input would be greatly appreciated. Thanks!