Just to play devils advocate, but it has been said that with the 7d, because of it's increased magnification, compared to 30D,40D models, require faster shutter speeds above the 1/focal length speeds prior models would have required... Are you 100% positive it's not camera shake/slightly too slow of shutter and or lens MA being spot on vs camera sharpness? Just ruling that out... By all means the camera has it's benefits and downsides, but to be fair, and perhaps my sharpening in camera and in post may be different/higher than others, but this camera has been one of the sharpest cameras i've owned and that goes all the way back to the 10D and MF and LF cameras... As i said before, I cannot speak for everyone, but for the OP, rent the camera and come up with your own conclusions because no one can answer it for you.