D300 lens AF fine tuning is FANTASTIC!!!!!

Started Nov 27, 2007 | Discussions thread
SteveL54 Senior Member • Posts: 2,709
Re: Could adjustment be concealing camera issues?

Adam Shyevitch wrote:

So far, I've adjusted focus for my 50 f/1.4, 35 f/2.0 and 30 f/1.4.
All these lenses needed between a +9 to a + 13 adjustment for tack
sharp focus at their widest aperture.

In this case maybe not. You may be compensating for focus shift due to spherical aberration within the lens. That's not a camera problem. SA is a problem at very wide apertures. As one stops these lenses down you can actualy see the point of sharpest focus shift.

Steve

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