yes, this was wide open, just as the other photos taken during this concert linked above
This is an old M42 preset version, the lens is not with me now so I cannot verify it's serial number. I neither have very good photos of it, but these two which I had uploaded to my hosting site when I just had received the lens:
the comparison shots with the Tak 200/4 and Pentax FA J 75-300 at 200mm, they are 100& crops and I just post the links as they are too big to directly show here:
center performance:
http://i39.photobucket.com/albums/e1...centrecopy.jpg
right lower corner:
http://i39.photobucket.com/albums/e1...omparecopy.jpg