After sending back my new 70-200mm f/2.8, I ordered a 35mmL. I had used the lightroom search function to look at my 20,000 images to see which focal lengths were most often used, (24mm or 35mm). I found that I could use the 35mm for about 70-80% of my shots in that range.





The new 35mmL arrived last night, and it seemed to me to be backfocusing with my 5D MK IIa lot. After working with it for 3 or 4 hours setting up the microfocus adjustment, a +2 made a huge difference. I was doing testing at f/1.4 to f/1.8 so I could keep a shallow DOF and find out exactly where it was focusing. i used all types of images, from test shots to real world images, and I am stil suprised that a tiny MF adjustment made such a large difference in image sharpness. I guess that thin DOF requires focus to be right-on!


Now, I'm really pleased with it. Next, I'll mf my 1D MK III to it. I've got a starting point now, I'm curious to see if the same setting works.