If you were to post two photos taken under identical conditions with the same exposures and processing, you would then be able to get some meaningful feedback.
Peter
Same day within minutes of each other (clouds move!), same exposure (using the histogram, adjusted speed to match histograms), same processing!!!! I have now looked at several hundred shots and have come to the following conclusions:
1. The Canon L lenses and the Zeiss lenses have about the same resolution, a negligible difference. (24-85n, 35-70 f3.4, 45 f2.8, 24-105IS, 50 1.4, 70-200IS f4 and f2.
2. The Canons and Zeiss pass different amounts of light for a given aperture and speed (Zeiss are a bit darker)
3. The noticeable difference is the Canon's are more contrasty and 3 dimensional, the Zeiss's have better gradients in the middle range. (the effect of each can be recreated in post processing to look like each other)
4. The Canon's are fully automatic with IS so are more practical
5. The 24-105 IS turned out to be a stellar performer!!!!, better than the 24-85 and the 45mm
6. So my kit is the 24-105 IS, 70-200 f4 IS, 400 f5.6, and soon a Nikon 14-24 2.8
7. My quest is over!!!!!!!!!!!
Marc