Depends on what type of shooting your after.
I was deciding on a 17-55 vs 28-70
viewtopic.php?f=5&t=27513&p=308868&sid=76df050e36c3792d90326e369f4bde07#p308868Eventually I decided on a 28-70
First thing I noticed with the 28-70 is the CA.... Tried it on different body and tried another 28-70 from a forum member and it showed the same results -- hence i put it down to lens feature, which I can easily live with :
viewtopic.php?f=5&t=27973&p=313278&sid=76df050e36c3792d90326e369f4bde07#p313278Its a bulky piece of gear and yes its heavy, weight all adds up when you have the body + grip + lens + flash, and multiply that by 2 if your shooting with 2 boddies and a zoom on the other.
I then used it for a couple of weekend for wedding, using 12-24, 28-70 combo on two bodies. 12-24 will get changed to 80-200 when needed..
I found the 28-70 not wide enough for the type of events I shoot, hence having to switch over to 12-24 quite often. Not too much of a problem as am using 2 bodies but I didn’t like how the 12-24 distorts the pics, not very nice for people photography - have to be very careful
w/ the angle you shoot at.
so in the end I sold it here in the forum 3-4weeks after I bought it.
viewtopic.php?f=38&t=28375&p=317531&sid=76df050e36c3792d90326e369f4bde07#p317531It would have been perfect in the FX format but what i needed at the time was really a 17-55.
The 28-70 is prob still the best lens I've owned and as for portrait use - its unreal. I just couldn’t justify keeping a 28-70 and a 17-55 at the time. Having said that, I have not looked back and the 17-55 is my main work horse even with the D300 - its an unreal piece of glass..
I'd say I shoot 70% of an event with my 17-55..
Hope that helps.