Canon Rebel Xsi focus and sharpness problem

[peripatetic]

Originally Posted by elmonte

I am viewing them in Adobe Photoshop or Microsoft Office Picture manager

It is certainly possible that MOPM is part of the problem. The scaling algorithms may be introducing artifacts that aren't actually there in the image itself.

Photoshop had this problem until CS3 - around 2007?? At 25,50,75 or 100% it was sharp, but at any other image magnification it was horrible. Nothing to do with the underlying image, everything to do with the scaling algorithm.

What size output are you using? Do you ever make prints? How are you doing your sharpening? Are you shooting JPG or RAW?

It's more likely that your problems are on the processing side than with the lens.

One place to start is to consider using Adobe Lightroom for all your image processing and management. It really does simplify things.

Interesting article today:

http://www.luminous-landscape.com/es...of_focus.shtml