Re: First Test Drive of "The Stack": Nikkor 200-500 with a 1.4 TC on the D7100
I've already done that test. I borrowed a friend's 200-500 and raced them.
As for image quality, it's (pardon the pun) a photo finish. But there's three things the Nikkor did better:
1. Autofocus latches on far better with the Nikkor.
2. Nikon's VR outshines the Tamron VC,
3. The Nikkor functions quite well with the 1.4 vII TC I already owned; The Tamron would not AF with it.
In short, I'm not getting better shots, but I'm increasing my keeper rate.
I'm glad to read this. I have a Tamron 150-600 and I have tried a Nikon 200-500 in the store. Your findings matched my own impressions exactly.
For a non-moving subject, the Tamron is just as good plus has a little extra zoom, which I like.
But once you're looking at a moving subject, be it birds in flight, planes at an airshow, or cars at a race course, the Nikon is the better lens and it's only a few hundred dollars more.
I'm now setting aside some money for the Nikon lens. When I have set aside enough, I will probably list my Tamron on ebay (I got it so cheaply I can probably make a profit on it anyway) and then use the proceeds to buy the Nikon at that time.
What makes this choice for me is the fact that I enjoy taking action shots more than photographing non-moving subjects. Faster focus action, better VR, and a better chance of AF NOT getting lost with a large change in subject range all point me toward the Nikon.
For non-moving or slow moving subjects, I'd keep the Tamron and never worry about it again.