hello,
first of all I have these lenses http://www.ritzcamera.com/product/25...bct=%3Bcisigma

and I use a canon 10d.

These obviously must really be horrible lenses. I have to spend way to much time in photoshop to get my pictures the way I want them.

now my question is how much post processing will have to be done if I would get a higher quality lens?

I see pictures at different sites including this site were pictures are sharp as a tack, and colors are very bright.

my sigma lenses dont do this

is it the camera or the lenses?