Just get the 24-70. It's both useful range for DX and FX shooters. For most event, street shots and portraits I use it on my D300 to get the 36-105. When the situation gets tighter, I swith with my D700. I find out that the bokeh is much more creamer at 105 wide open than at 70 on FX.
On your case, I guess since you have the 18-200, when the situation gets tighter, just swith to it. But anyway, that's just my photography style cause frankly speaking, the 24-70 is the only mid-zoom lens that I will ever use. I don't know how to explain but it's just difficult to get a bad photo out from it. Go figure..
On your case, I guess since you have the 18-200, when the situation gets tighter, just swith to it. But anyway, that's just my photography style cause frankly speaking, the 24-70 is the only mid-zoom lens that I will ever use. I don't know how to explain but it's just difficult to get a bad photo out from it. Go figure..