QUOTE(LukeWalker @ June 21 2007, 08:58 AM) [snapback]156881[/snapback]
i agree with chris, the canon 24-70mm 2.8 L lens is especially soft in my opinion. frank was one of the first people to convince me that it wasnt just me, that lens is SOFT. ali and i barely take that lens out of our bags anymore unless we have too.
Really?
I've got the (current model I think?) 24-70 2.8L and it's razor sharp - and I'm very picky about sharp. That and my 70-200 2.8L IS are perfectly sharp, the 70-200 especially so. I own the 50 1.4 prime but very rarely take it out. People ask me why I don't shoot primes and I just think the zooms are so incredibly sharp already that 'what's the point?'. I found the 50 1.4 to focus a bit slow - even on the MkII.
I wonder if the camera has something to do with this - really. All of my lenses were intermittenly 'soft' when I was shooting 20D's. They'd be okay, then everything soft in a set, then okay again - it was really messing with my head for a while. Then after going to the MkII's (for focus reasons more than anything) all of a sudden all of glass was perfectly sharp 99% of the time.
I really think the focus system in the 1-serries cameras drives the focus motors to a much finer degree than the 20D class. I really think there is a certain amount of 'slop' in those focus systems which explains the intermittent nature of my problem. That's also the reason I passed on the 5D as it has essentially the same focus system from everything I could read.
It really is sad though - you buy a $1300 lens and a $1500 camera body and they should focus dead on every single shot, no question about it. But it just doesn't seem to be that way - wasn't in my experience anyway.
I also shoot the Tokina 12-24 f/4 for my wide stuff (the 'generic' replacement for the 16-35L) and it's a bit soft, but hey, it's less than half the price of the real deal.