I have a meyer-optik Gorlitz trioplan 100mm f2.8 with an adapter that worked with the 5Dmark III and the 1DS mark3. However, the issue I have is that the newer bodies like 1Dx and 6D will fit this lens/adapter combo, but the mirror seems to get stuck when I try snap photo. Does anyone have any ideas on this? I tried looking for another adapter on ebay but there's nothing conclusive that they will work on the 6D or 1Dx. Would greatly appreciate it if anyone can provide some insight. Thank you.

