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p.1 #2 · p.1 #2 · Is something going on with my 5d mk1 (focusing/centering)? | |
It's very difficult to get accurate focus at the place you want on an inclined plane. Have a look online for LensAlign II, which is what I use for AF microadjustments on my gear. The target you focus on is vertical (parallel to the sensor plane), and it has high contrast target gizmos for the camera AF to lock on. You use the scale on the inclined plane to determine where the plane of focus is, with respect to the vertical target. You wouldn't get reliable and repeatible results by shooting only the inclined plane.
What you show looks pretty good, but it's not possible to determine where the camera thinks zero is located. Chances are that you'd agree a lot more with the camera if you had a more certain focus target.
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