Full test report:-http://www.photozone.de/pentax/618-pentax70f24If you compare to the old PZ review of the DA70 on the K10D, you will find the K-5 actually deliver much higher resolution for all the images across the frame.(Above: DA70 on K-5 - Imatest figures - PhotoZone)(Above: DA70 on K10D - Imatest figures - PhotoZone)Related:-Photozone DA 18-135 Full ReviewDirty Pentax Lens Factory, Dirty
