thanks for that comparison.
Is it me or is the image not sharp? Did you use a tripod?
How does the lens hold up to other canon L glass?
I did use a tripod, but no sharpening have been applied, it's straight from
the raw-files. Also both lenses was focused on the same spot, but the crops
might not be in complete focus as I was only interested to compare the
lenses, not to find out if they are sharp (they are, I knew that already).
The corner crops are not in the plane of focus, so anybody thinking that the
lenses are soft in the corners would make a wrong assumption. The lenses was
tested on a Canon 5D.
The 70-200 2.8 L IS is a bit better in 70-105 range that it have in common
with the 24-105, but not all that much. I really like the 24-105.