Ah, yes, now I see. Sorry, I misread your post earlier. My bad. So with my new understanding...
What lens would you recommend to cover this 35-70mm range?
Seems to me it would depend on whether or not you need the additional 1 1/3 stop of the 50mm f1.8 enough to sacrifice the zoom capability of the 24-70mm f2.8 lens. In my case, I do need the speed, so I went with a 50mm prime (f1.4 actually, which has a slight additional benefit of being two full stops faster than the f2.8 zoom while also being a quarter of the price) and either crop in post if I want a "tighter" framing or just "zoom with my feet" since, in my case (see below), the difference (between 50mm and 70mm or 50mm and 35mm) is usually just a step or two.
Also if you don't mind me asking what situations do you normally take out your 18-35mm and what lens do you carry with it?
When I'm shooting a band in a small and/or crowded bar, I'll take the 18-35mm f1.8 and 50mm f1.4 lenses. So basically like you mentioned, "indoor and poorly lit areas" where I don't have a lot of freedom of movement while shooting moving subjects (with a relatively fast shutter).
Hope that helps more than my last reply - Mark
Thanks Maestro, i think there basicly my two choices in terms of lenses to bridge the gap. Don't think ill be able to make the decision on what one will be best yet but its good to know there are options to cover the range.
There are no other obvious choices in that range that i could of missed is there?
Tom, it MIGHT be worthwhile selling/trading your D3100 to get maybe a D7000 if possible? (great price of around £480 atm with Nikon's cashback) You wouldn't be limited to AF-S lenses then & might be able to pick up some bargains. (just a thought, depending on your budget of course)
It has crossed my mind many times! Are there any specific lenses (non af-s) that are particularly good that could tempt the change over?
Although think i have decided on waiting it out till i have my 18-35, whatever i chose for the middle range (maybe a 50 f1.
then get the 70-200mm before upgrading. Will allow me to get a 11-16mm f2.8 tokina super wide angle. i feel that if i upgrade the body now by the time i have got the other lenses i would need to upgrade again! the bodies evolve so much faster than the lenses.
Thanks for all the help/advice guys its much appreciated