In another thread (here) I mentioned that I am experiencing a strange central flare in images taken with my 90mm HR-W lens. It happens all the time, but especially on bright overcast days with low lying cloud. Originally I didn't think it was flare because the shape and location of it was so consistent - dead, optical centre of frame and perfectly circular - and wondered if it was a copal shutter issue. Rodenstock inspected the lens and found no fault.
In the other thread it was mentioned that this is a well known issue with some Rodenstock lenses, particularly the 90mm and 40mm designs. This was a real surprise to me as I have never read about it or seen it mentioned before. I'm wondering who else here has experienced it and in what situations is the problem presenting? For you, is it just a matter of paying more attention to lens hood placement, or is it more complicated than that? Personally, I find it painfully annoying!