Re: CANON D10 FOCUS PROBLEM

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Jim is correct in that some minor focus problems can be cured in post. In
fact, because of the low-pass filter (necessary for proper color
interpretation) between the microlenses and the photoreceptors, sharpening
of some kind MUST be done for all images acquired from a digital camera. The
10D can be set to essentially compensate for this at time of acquisition,
unless you shoot RAW. But the camera has to be set properly, otherwise you
wind up doing it in Photoshop, which is the technique many like to use
anyway as it gives more control.

This initial FIP (Fix It in Photoshop), which is only a small nudge of in
the USM (UnSharp Mask), should give you a fairly sharp image on the screen
is done before any other image processing. You will probably have to do a
second, usually more obvious, output sharpening as the last step prior to
printing.

Read more about this at
http://www.microsoft.com/windowsxp/digitalphotography/learnmore/fixit/sharpening.asp

But from Steve's note, I suspect there is more going on with his camera. The
10D is a strange beast, in that a fair percentage were sent from the factory
with a suboptimal focus alignment. Canon considers this a consumer camera
and not a pro camera, and the quality control, or at least the allowed
tolerances, are slightly different. While most of the cameras come from the
factory with great focus, there are many owners who are finding that they
have to be sent back for recalibration. This may or may not be necessary in
Steve's case, but I suspect Steve's problem is not one that can simply be
fixed in post.

Still, I hope I am wrong and a simple FIP is all that is necessary.

pax,

rand


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