Canon 1Ds Mark II mirror problems with MF lenses?

[orly_andico]

I got an old 1Ds Mark II from KEH (.. because it was cheap, and 15 years ago getting a 1-series DSLR was one of my ambitions..)

I have noticed that many if not most of my M42 lenses, even the ones which don't have projections sticking out the back (e.g. 100mm f/4 Super-Macro-Takumar) cause an error when I trip the shutter. The mirror gets locked up and "Err" appears on the top LCD.

This problem does not occur with my 6D or any of my reduced-frame Canon DSLR's.

I know the 5D had a similar issue, but I cannot confirm if this problem exists on the 1Ds II.

Interestingly, I have a Nikon 180mm f/2.8 ED and it works fine on the 1Ds II.

[calvin83]

This may help
https://www.dpreview.com/forums/thread/3618442

[kansalliskala]

here is the 5D list

https://www.panoramaplanet.de/comp/

[Slalom]

The issue is the mirror is at 45 degrees so its depth is 24mm and it comes up in an arc so it is 24*0.414 further forward at the top, If there is a cleaning setting you may be able to see this. m42 thread may go through the adapter just enough to fowl the mirror.

[kansalliskala]