I ran through an interesting exercise today – evaluating the autofocus microadjustment with the Canon 5D Mark II and 2 of my lenses – the 24-105mm f/4 L IS and the 70-200mm f/4 L. I used the test chart and technique described by Jeffery Friedl. It took about an hour, most of it reading and set-up. Once I started taking and evaluating the test images, it went quite quickly using Adobe Lightroom. I tested each lens at several focal lengths – 24mm, 50mm, 70mm, 105mm, 150mm, and 200mm.
The results? The 24-105mm was spot on and did not require any microadjustment – nice! The 70-200mm was also very close. I ended up setting a -2 adjustment for this lens.
Now its time to get out and actually take some photos. 
