>From: "M.J.Shupe" <[EMAIL PROTECTED]>
>4Mpixels is plenty to reach .001 inch circle of confusion (IIRC--did I
>get the number right?) which usually defines "depth of field" for 35mm
>film. And since the standard for low precision autofocus is "within
>depth of field" and that they would have to change the .001 figure to
>something smaller to make up for the increased magnification required
>with the 1.3x factor, it may not longer be "within the depth of field"
>when trying to focus at f/8. Still, I hope they include the ability to
>try focusing at this aperture, even if they don't guarantee
>it...probably still would work reasonably well for a percentage of the
photos.
Lemme see, I believe that that size of one CCD cell? in 1D is .0005 inch
but as it is only sensitive to red green or blue youll need to look at
values next to it also. If you take square of four, youll have enough
information to get good colour estimate of the area and slightly better
lightness info. Side of the square would then be 0.001 inch, which makes
me wonder if you can produce much beyond that resolution anyway, even with
spot on focus.
I hope I got the numbers right...
Karri
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