they have told me always the 135mm was realy sharp, but you never realy find out untill you crop to 100%. This are 2 combo's i often use, the bare 135mm, and the sigma 120-300 S with a 1,4 extender. Look the difference att 100%
bouth shots where croped in a lot. so they are not compressed
|Rotting Gracefully by Mond|
from Natural Decay
|attic by wgjohnston|
from In the attic, or in the basement!
|Ox Bow Aspen by McFrost|
from cell phones - nature photographs