This is pretty much the largest size picture I could get from the Mamiya-Secor CS 135 1:2.8 at 2.8 that still looks sharp. This picture illustrates the lens capability in a simple lighting condition with a scene that is not extremely contrasty. PP included color fringing correction (the word "Mellor" on the the left on the top book showed visible green-magenta fringing without the correction) and much sharpening.