Upload & Sell: Off
Even it did rain I decided to go shooting, during the 5 hour hike in forest, it did not rain for 15 minutes, which allowed me to shoot one comparison shot. I did leave lens C home, so here are just lenses A and B. Hike was otherwise very useful, I found out that 50MP is like "mini"-100MP, similar brilliance is in the images. I have just very quickly checked images in Appe Aperture and there were few surprices, which I didn't except to see, but more about those later.
50MP usability on rainy day was excellent; the front element is very deep inside the lens and hood adds little more protection. Focusing mechanism focus feeling is best (according to me) of ZE lenses, due to which the slightly short throw on "normal shooting distances" did not came problem even I had to focus through rain protection sleeve.
The more I think this, it's next to impossible to arrange useful side-by-side shooting. Even on rainy day (it was very overcast, the sky did seem homogenous gray) like this the light just changes too much. This leaves only option to shoot side-by-side in direct sunlight or moonlight. Every other light just changes too much. Any advice would be welcome how to mitigate this. Second 5DmkII would of course help since it's faster to swap camera bodies than lens.
Test shots are shot with lenses A and B using aperture f/2.8, tripod etc. are same as in last shot. Distance is also about the same, thou I don't know exactly since my laser meter was not with me. In Aperture I applied same settings to both images (recovery 0.09, saturation 1.1, highlights 13.06 - this is my preset for image when it's imported into Aperture - not an image specific adjustment optimized for either of these images).
Due to light changing I again would advice against draw any conculsions of contrast, color, "3D" etc.
Ask if you have any questions concerning test images.
Image 2 lens A
Image 2 lens B
Image 2 crop 1 lens A
Image 2 crop 1 lens B
Image 2 crop 2 lens A
Image 2 crop 2 lens B
Now closed down to f/2.8, and I still don't see the advertised superior sharpness advantage of 50MP... (and FYI - I still could not care less about sharpness, just proving wrong the forum BS - there just isn't that big difference between 50mm primes on sharpness, this is one reason why sharpness is really boring discussion topic and pretty meaningless on this kind of simple lenses)
PS. Easier solution than to download images is to open them to tabs then you can flip tabs easily.
PS2. Lenses A, B and C are all different lenses - there is no trick, neither bias towards to any of the lenses, I'll just try to provide information, same time while learning myself.