Hate to admit it, but I have the AF issue. Going to make a case with Nikon. Any advice?

Started Nov 4, 2012 | Discussions thread
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Leonard Shepherd
Leonard Shepherd Forum Pro • Posts: 10,773
Re: Didn't you say you know how to test focus?

Here is another on he might miss.

Another 100% crop, focused with the left AF sensor that shows a clear backfocus of about 10cm.

If you are not convinced, let's try with another lens. An AFS 35mm f1.4. This time the focus is made on the sign

I have missed both.

On the first image the symmetrical circle and the random black marks are targets where AF may fail to be accurate.

On the second target it may be at an angle, and it is unclear where you intended the AF to focus. Parts of this second target may not be good for testing a vertical sensor.

Sorry - your testing is anything but convincing

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Leonard Shepherd
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