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[OM] Re: Focus problem

Subject: [OM] Re: Focus problem
From: priit@xxxxxxxxx
Date: Tue, 29 Aug 2006 21:20:55 +0300 (EEST)

On Tue, 29 Aug 2006, Moose wrote:

> As John pointed out, the cause may also be mirror alignment. The shorter
> the fl and the shallower the DOF, like f1.4 produces, the more critical
> it becomes.

I see, so the problem might be smaller and perhaps unnoticeable with 
longer lens (and obviously the aperture), the 50/1.4 then must be one of 
the prime candidates to bring it out.

> The other thing that should be true, but I never tested, is that the
> focus should still be close at the top of the frame and furthest off at
> the bottom, because of the way the mirror is hinged at one end.. So
> that's something to check for on your test shots.

Very interesting, never even thought of checking the focus off the center. 
Good idea and I'll check that too when there's more light. It's nighttime 
now, I took a quick peek through the viewfinder but it's difficult to 
tell right now if it's like that.

priit.

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