----- Original Message -----
From: "Ken Norton" <ken@xxxxxxxxxxx>
>> Have you tried to focus the 24/2.8 on your OM body with split screen? You
>> can differentiate the focus of 5 and 6 meter? I just tried with my like
>> new
>> OM-1n, I immediate surrender.
>
> Well, with the OM-3Ti and 2-13 screen I'd say that I could barely do
> so, but was glad I had no sharp knives nearby otherwise my wrists
> would be slashed. I didn't mean to imply that the focusing was easy
> at this level--far from it, but it is possible. You do have to DoF
> preview (stop down) the lens to F4 (24mm F2.8) to do this critical
> focusing, though. The lens lacks too much contrast at this extreme to
> adequately focus at F2.8.
>
When talking about focus with split screen, I expected the larger the
aperture the easier to focus, it is not related to the contrast of the lens,
no?
C.H.Ling
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