self focus adjust

Started Feb 11, 2007 | Discussions thread
training_editor Contributing Member • Posts: 865
Re: incandescent light

I hear ya.

My 50 1.4 used to front-focus quite a bit on my istD and K10D in incandescent light. With the new K10D firmware, it is much better but still not perfect. I was the one who tested the hot mirror filter idea. No change.

I tried the self focus adjustment as detailed above, but the camera was perfect with every lens except the 50mm. (I don't own an 85mm, but I have 20, 28, 40, 50, 77 and 135 fast primes.)

It took a HUGE change to make any difference, and then of course all my other lenses were way out. I moved it back to the default.

This just reinforces what I have been saying all along. It's not a camera problem with front-focusing with the 50mm 1.4 (and perhaps the 85mm 1.4.) I think there is something in the body-to-lens interface that only affects some lenses and not others.

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