i find the 24-105 results average strait out of the cam, it really needs sharpening. comparatively, i had to increase cam builtin sharpening to +3/4 when this lens is on, but set to 0 when using the 70-200. i thot of bringing it to CSC for recaliberation but the fact that indoor pics are fairly sharp whereas outdoor ones are not, i can't justify.
tt's a odd case.. for the 24-105mm, i adjust the sharpness to higher depending on what i want to acheive in my photos. for me the dslr settings play a part in my photos beside the lens itself..