Quote:
Originally Posted by Octane
DPP has an in-built lens distortion correction facility. Made by Canon. 
Luis, I must have an excellent copy of the 17-40mm f/4L USM. I shoot at f/16 and it is sharp at pixel level.
H |
There're good and bad copies of lenses all around. At F16 the 17-40 is as good as at F5.6 maybe slightly better. Unfortunately for nightscapes its bad at F4.