The diffraction limits are only based on focal ratio... not focal
length. The particular lens attached makes no difference. But I like
your idea. At a certain focal ratio it would make more sense to
decrease the ISO or increase the shutter speed if possible rather than
closing down the lens.
Chuck Norcutt
Ian W wrote:
> This discussion makes me wonder why the manufactures don't have a sharp
> option in auto mode where it limits the aperture size automatically
> depending upon which lens is attached
> something like setting a maximum iso limit for auto iso mode, but done
> automatically.
>
> The difference in colour between the E1 and E3 doesn't bother me too
> much, it can always be changed to be near as dammit, but the fact that I
> can't get sharp results with my very expensive 180/2 (my wife still
> reminds me about how much I paid for it!) is perturbing me - shooting
> wide open and on a tripod with anti shake. I wonder if there is some
> failure in my technique (most likely) or maybe I have a faulty camera
> (least likely). Maybe its just the wrong light.
>
> I am also finding the 12-60 doesn't appear to give me the results I got
> with the E1 and 14-54 - sadly neither are with me anymore so I can't
> compare.
>
>
>
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