Flabbergasted (in a negative way) after testing Canon 24-70L on Scarlet

[Robert Andriessen]

Martin, go have it sharpened at Canon CPS, I had mine done for free (24-105L love this one) right after I bought it.
http://www.dsp-bv.com/

ps from what I heard though the 24-70L is not the sharpest in the pack

[RobertP]

EF-S lenses have smaller image circles than EF lenses and are known to be all-around great performers, especially compared to the faulty, kind-of-old, 24-70 zoom. EF-S lenses are generally newer designs, and are pretty darn good (I'm speaking mostly of the primes, I don't use zooms).

The 17-55 is not a "consumer" lens, or at least I wouldn't call it that.

A consumer lens would be the horrible "kit" lenses, like the 18-55 or 18-200 or something.

However, I'm not a big fan of any zoom lens, I think Nikon might have the edge there.

[john jeffreys]

You probably just got a bad copy. Some 24-70's are sharper than others, but in general, its a pretty solid lens and is fairly widely used across all kinds of productions.