Originally posted by RICHARD L. Sharpness and contrast are almost the same. The 645 renders warmer (more yellowish) colors than the 67 lens. I had to fiddle with the WB to obtain true-to-life pictures with the 645 lens.
The 67 picture was perfect "AS IS". I had to fiddle with the WB on my Mac to correct the 645 yellowish picture and match the 67 rendering. Both ISO 800, 1/400 sec @ f/11 on tripod. Both lenses are labeled to be "200 mm" in focal length but the 67 seems to be a little longer than the 645 lens.
A difference is a difference, so thanks. In an absolute comparison with nature, are you running 'vibrant' or 'radiant' mode for these images?