Originally Posted by
HDNitehawk
Just looking at 1 picture its hard to pin it down. A person really needs a series of pictures at each setting to determine if it is hitting or not. Another thing is even though say the picture with Natures Recipe appears to be dead on, I know that that the positioning of your camera is skewed and not square to the table. Same thing with the lenses. You can see the DOF trail off sideways up and down in the pics.
You should be using AF single point, single shot to test with. Since you do not have a lensalign, maybe lay a ruler down on the table next to the item you are shooting. It might help getting a feel of what is going on.
With the 500mm F4L on the 5D, which is extremely accurate (the most accurate lens I own) at 0 I had Front Focus of 12, On Focus of 21 and Back Focus of 3 in the series. Even the most accurate lens combinations are going to drift front to back a little. You got to hit the right average at the setting that works.
If its not to late to send it back, I wouldn't hesitate sending it and getting a different copy. We pay to much for our equipment for it not to perform the way we expect. Another copy might do better, or not.