Camera used for these tests
Phase One 645AF (same as Mamiya 645AFD III) with P45 digital back 39 Megapixels resolution
Produces 112mb (8 bit) files suitable for huge prints.
Manually-focused images using Mamiya FD 402 focus magnifier, tripod, no wind, bright but overcast. I used glasses but am not great at focusing (long sighted!). I still prefer it to AF though. Mamiya Electronic release used. I'm not technically-minded, I'm only interested in how lenses perform in real situations. These tests are not comprehensive, but will hopefully help anyone interested in buying these products, or anyone who already owns them but hasn't tested them yet (why haven't you!). I'm just sharing this information because I looked for it on the web, but couldn't find enough about these lenses. Mamiya lenses are excellent if you understand how to get the best from them, and they're at bargain prices on the used market.