Archived from groups: rec.photo.digital.slr-systems (
More info?)
In message <29dcj15atf6jno50baj4jgp59e7tlm3f2u@4ax.com>,
Rich <none@none.com> wrote:
>On Fri, 23 Sep 2005 22:52:11 GMT, JPS@no.komm wrote:
>
>>In message <8hs6j1lmm6kfk7f7875brk1jou3h5ugmnr@4ax.com>,
>>Rich <none@none.com> wrote:
>>
>>>Don't you love it? All the DSLR buyers (except
>>>Olympus owners) saying what
>>>a "non-issue" dust is, and yet many times when you
>>>see images posted, there it is.
>>
>>It's usually the result of Tv-priority or program mode with too high an
>>ISO setting. Most of those images where you see the dust are ones where
>>the aperture is much smaller than it really needs to be.
>
>Well, when a lens's max aperture is something like f6 and you need to
>set it to f9-11 to get a decently sharp image, can you blame them?
Regardless of whether or not that need is real, f9 to f11 only shows
dust very lightly; you have to be looking for it at those f-stops. It's
the upper teens where it starts to become vivid; f-stops that I usually
try to avoid because of diffraction issues.
--
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John P Sheehy <JPS@no.komm>
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