Today I checked the manual focus on my Canon 24-70mm f/2.8 L lens with a 5D MkIII body. I thought the corner to corner focus on recent images was not consistent. This image is the result of stacking 20 separate images using Photoshop Classic.
I am retired and love photography. Starting at about 10 years old, I discovered this fascinating world through a viewfinder. Ansel Adams and Ken Duncan...