Not sure if I should post this in the Nikon 1 forum or the Nikon 1 lenses forum but here goes.
Just got my J1 and am expecting the FT1 any day now. I have been looking at a cheap lens that would give me the superb reach possible with 2.7x magnification. I also have a D7000 so any lens I buy may well get used on that as well.
Looking at getting a telephoto lens topping out at 300mm. I know I could get a relatively cheap Nikkor 55-300 but was wondering if anyone had any luck with the cheaper 70-300 lenses from Tamron or Sigma? Do they work at all? Are they any good with the J1? Is the additional cost of a Nikkor lens worth it?
#1. "RE: 3rd Party Lenses for Nikon J1" In response to Reply # 0
Re: Third-Party telezooms. it appears any of the newer lenses equipped with some form of VR (i.e., OS, VC) will not function correctly on the FT-1. Unfortunately, falling back to the older versions of those lenses means little or no ability to autofocus, as Tamron has only integrated both their internal motor USD with the newer VC image stabilization. All their older lenses are screwdriver for the most part. Sigma has some old non-OS lenses equipped with some form of HSM motor, but they're rarely seen new, and are available mostly on the used market.
#3. "RE: 3rd Party Lenses for Nikon J1" In response to Reply # 0
You need a lens that is especially sharp in the center at wide apertures, otherwise that 2.7 magnification doesn't buy you as much as you expect. The Nikon and Tamron 70-300mm lenses test about the same by that measure.
You should check weight too. The lens mount has a weight limit and I think it's under 1 kg. If you buy a lens over the limit be sure to train yourself to pick the camera+lens combination up by the lens rather than the body.