I have been very impressed with the sharpness of my TeleRollei. I haven't done any tests and I don't have the glass plate but subjectively it looks very very good. Check out the TeleRollei photos on this Flickr page (no, it's not me!). Some are shot on Pan X and really show the capabilities of this camera and lens. http://www.flickr.com/photos/8380625@N04/sets/72157625808130191/ Allan