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[OM] Re: resolving power and medium format lenses

Subject: [OM] Re: resolving power and medium format lenses
From: Winsor Crosby <wincros@xxxxxxxxxxx>
Date: Fri, 06 Oct 2006 18:02:11 -0700
I am skeptical of that popular assertion. If you divide the pixel  
count in one dimension by its physical size you get about double a  
pretty good lens resolution. It seems to me you have to have enough  
pixel redundancy to capture a 70 lpmm target, for example, no matter  
where it falls. They are not always going to line up with the pixel  
grid. Then you get aliasing and moiree. Then there is the high pass  
diffusion filter. I think that all works against that notion.

The other argument against that assertion is that surely Canon would  
see the prestige and marketing advantage of producing at least a  
couple of lenses that would exploit their sensor fully leaving  
everyone else further in the dust, if the assertion were true.

There does seem to be consensus, where I have been looking, that a  
high count sensor will sort out the good lenses from the bad ones  
though.





Winsor
Long Beach, California, USA




On Oct 6, 2006, at 3:18 PM, Chuck Norcutt wrote:

> At least one Canonite who has been lusting after Zuiko 18, 21 and 24mm
> lenses and other brands besides Canon says that even the best of the
> best can't resolve the full 16MP all the way across the frame.



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