Quote (onepagememory @ 7 May 2010 18:04)
Not only that, but build as well. I've rented the 24-105 and its a good lens, but it is inferior to the 24-70. For my needs, F4 isn't fast enough. After messing with 1.2, even 2.8 is slow.
yea f/4 feels bit slow after using 1.2, but imo you shouldnt compare zooms to prime lenses. if your shooting static objects in low light without a tripod 24-105 is better than 24-70 because of the is, i think it helps about 3 stops and 3 stops down from f/4 is f/1.4, so you can hand held the 24-105mm way better than the 24-70mm, not to mention that if you would use prime lens instead focused area would most likely be too small. how ever if you need to stop motion, in low light then 24-70 is slightly better, but 1 stop isnt really that big of a deal. when i do need smaller dof or stop motion in low light i can use my 50mm 1.4 or 135mm 3.5. for most shooting f/2.8 has bit too small dof anyway. and sometimes its nice to have more reach for the zoom lens
Quote (lithfkn @ 7 May 2010 22:45)
Nah mate. If you are spending $1600 dollars on a lens, you should expect it to be pin sharp at all stops. I'd get that thing calibrated. Having to shoot at f4 because 2.8 is soft defeats the purpose :/
I've heard the 24-105 is pretty spot on at f4.
about all lenses are softer wide open than stopped down a bit, anyway my lens is sharp enough at f/4 also, but its sharper when stopped down a bit.
Quote (onepagememory @ 7 May 2010 23:03)
Because of the way a lens is built, it is, by design, less sharp at 2.8 than at 4.0 or 5.6. Any lens works this way.
not all lenses work that way, for example my zeiss 135mm 3.5 is as sharp wide open than stopped down, if i remember right it even got little softer at f/8+ than it is wide open.