filmscanners: Canon FS2710

[Thomas B. Maugham]

I am using a Canon FS2710 invoked from PS 6.0.1 via the twain driver.  My
question is:  Should I modify the image using levels, curves, etc. at the
time of the scan or simply perform the scan, save the image as a .psd file,
then make any modifications later?

Thanks...

Tom Maugham