Im currently deciding on a new lens and I would love for some input from our residential photographers. This Wednesday I tried my hand with concert photography for the second time. As everyone should know, my Nikon 18-55mm f/3.5-.56 kitlens absolutely does not cut it when working in low light conditions. I was forced to shoot at ISO 800 and slow shutter speeds (1/25 1/50) and even at these settings I was pretty much underexposing every shot. The resulting shots are heavy on grain and/or have fallen victim to blurred motions (mostly hand gestures).
My initial choice is to wait for Nikons new af-s 50mm f/1.8, which comes out in June.
Its roughly 9.5 times as light strong as my current lens at a focal length of 50mm which would allow me to bump down the ISO to 400 and significantly increase the shutter speed. The Nikon prime should roughly set me back about 200.
However as of today Im also considering the Tamron 28-70mm f/2.8.
Its roughly 4 times as light strong as my kit lens at a focal length of 55 (and up) which would allow me to bump the ISO down to 400 and double my shutter speed. It is quite a bit more expensive than the Nikon prime as it costs somewhere between 350 and 360.
The reason Im considering this lens over the 50mm prime is the versatility in focal length.
Whilst looking back at my shots, I found out that I often shoot at focal length between 35 and 50mm. The Tamron lens would allow me to take wider shots as well as zoom in on the
action. The venue I frequently attend allows me stand really close to the podium, but during concerts there is pretty much no opportunity to move around and get closer or further away from the action at which point the prime would put me at a disadvantage.
What would you guys recommend? Do any of you have any experience with the Tamron lens? Would the versatility in focal length be worth the extra 150 as well as the extra hit in light strength? Are there any other lenses that you guys would recommend over these two? If you guys have other recommendations please take the fact that I have a Nikon D3100, and thus require auto focus to be in the lens, into consideration.