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Re: [OM] Can autofocus be as good as manual focus?

Subject: Re: [OM] Can autofocus be as good as manual focus?
From: "John A. Lind" <jlind@xxxxxxxxxxx>
Date: Fri, 02 Feb 2001 12:42:38 +0000
Add the combination of a _bright_viewfinder_ (faster lens and 2-13 screen in OM-2S/3[ti]/4[T]) with the dioptric correction and the difference is amazing. I would rate dioptric correction as the first order improvement and having a brighter viewfinder second. Note that the OM-2S and upward bodies have slightly dimmer viewfinders than the earlier ones due to their semi-silvered mirrors. The correction enables much more accurate focusing using the micro-prism ring around the split image.

My major issues with AF are what it focuses on and its ultimate breakdown in low light. Speed and accuracy within the higher end bodies and lenses has been improving. I'm still not comfortable with the machine deciding what it will focus the lens on and some of the hunting for a focus that can occur in very low lighting. I can still manually focus where I want the critical focus to be faster. The breakdown under very low light levels is a double problem. The AF lenses tend to be slower and viewfinders on the body dimmer. When it cannot AF for lack of light you're stuck with a slow lens and dim viewfinder that makes it difficult to take over from the machine. I'm staying with manually focused bodies and lenses.

-- John

At 15:19 2/2/01, Chris O'Neill wrote:
Someone else mentioned it awhile back, but it bears repeating...  For
those who's eyes are fading with age, particularly those who wear
progressive lenses (or contacts), the addition of an eyecup 2 and the
appropriate dioptric correction lens makes a BIG difference!


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