I found a fine sample of 85mm T*/2.8MM, very late model (88****) made in Germany version of a zeiss lens. Unfortunately, no matter what I try it does not clear mirror of my 5D.
I've got an offer from FMer for 35-70 and am really interested in this lens. however will my 5D have the same problem with 35-70 Cz lens too?
I thought the same. It is a gorgeous lens, and in fantastic condition. Unfortunately I will have to part with it. Want to make sure before I purchase 35-70.
Not sure if its the case with the MM 85 2.8, but with some of the 35-70's there is a little simi circular block attached with two screws to the rear of the MM mount. Removing this on the 35-70's which have it allow those lenses to work with the 5D. That is the only issue I have heard with regard to that combo. I would check to see if its possible a similar block is on the 85 2.8.
Here's a pic of the 35-70 mount. The circle highlights something different, but you can clearly see the block that some users remove spanning the 12 o'clock to 2 o'clock position. I doubt very much the 85/2.8 has this block. I think I've only ever seen it on zooms. http://www.pbase.com/stevenpa/image/90569126/original.jpg
Statistically, the 85/2.8 is a lens that clears the problematic 5D mirror. So either your 5D is at the very end of the bell curve re: mirror size and placement or a combination of a problematic 5D with:
1. a sharkfin - can't recall if the 85 has one that poses and issue, but check that the auto stop-down tab that comes out the back of the lens is not interfering with anything. If os, it's easily (and routinely) cut off.
2. an adapter that is far too thin. Many built their adapters a hair thin to 'ensure' infinity focus and that could cause an issue with an unusually problematic 5D.
IF you are using a chipped adapter, try removing the lens and adapter and re-installing it on the camera 'firmly'. Some chips on some adapters can be just a hair out of place - making intermittent contact and/or can only partially engage the focus confirm switch on some Canon bodies, camera brain-fade which can cause symptoms that SEEM like a mirror strike: all appears fine, hit shutter and mirror fails to return.
Power off, remove lens, power on and mirror drops back. This isn't a mechanical clearance issue but an incident of adapter-driven electrical one. Some well known adapters can also cause this on occasion due to a combination of 3rd party adapter tolerances and camera ones. Just make a habit of installing the lens on the body with a firm but reasonable twist.
And a Kindai adapter like in the photo is essential as they have exactly the right thickness
StevenPA wrote:
Here's a pic of the 35-70 mount. The circle highlights something different, but you can clearly see the block that some users remove spanning the 12 o'clock to 2 o'clock position. I doubt very much the 85/2.8 has this block. I think I've only ever seen it on zooms. http://www.pbase.com/stevenpa/image/90569126/original.jpg
Conner999 wrote:
1. a sharkfin - can't recall if the 85 has one that poses and issue, but check that the auto stop-down tab that comes out the back of the lens is not interfering with anything. If os, it's easily (and routinely) cut off.
2. an adapter that is far too thin. Many built their adapters a hair thin to 'ensure' infinity focus and that could cause an issue with an unusually problematic 5D.
1. I think I have tried method 1. It did not help.
2. It seems exactly that.
Power off, remove lens, power on and mirror drops back. This isn't a mechanical clearance issue but an incident of adapter-driven electrical one. Some well known adapters can also cause this on occasion due to a combination of 3rd party adapter tolerances and camera ones. Just make a habit of installing the lens on the body with a firm but reasonable twist.
Yep. Problem is, it needs to be done after every click.
p.1 #12 · one zeiss problem = other zeiss problem?
I have the AE version of the 85/2.8, which doesn't have the block that's shown on the above pictures. However, the lens' rear aperture lever was coming into contact with the mirror box on my 5D which prevented me from stopping down the lens. A few seconds of filing solved that problem.
I also have the MM version of the 35-70, which does have the subject block on its rear. No problems at all with this lens on my 5D...no modifications were necessary (I'm using a happypagehk adapter).
