Is this lens compatible with the D40? I understood the USD feature would allow this lens to work with my D40 so I ordered one, but the AF doesn't seem to be functional with my camera. Did I get a bad lens or did I order the wrong one (A005)? If its supposed to be compatible can anyone suggest what I might be doing wrong? Any suggestions appreciated. I bought the lens used to save a few buck so I'm not sure I can return it.
>"It should be compatible with your camera. Recommend >double-checking the AF switch settings on both the body and >lens."
The AF switch on the lens is on. The AF setting for the camera is set on AF-A which is what I've shooting with for years. Tried AF-S and it still didn't work. When I try to focus I can hear the lens start to focus, but then it stops without focusing. Any other ideas?
The Tamron SP 70-300mm f/4-5.6 Di VC USD has an AF motor built into the lens and is fully compatible with the D40 including AF. Make sure that your D40 is in AF mode. Verify that the AF/M switch on the lens is set to AF. Do your Nikkor lenses work correctly? If yes, try cleaning the electrical contacts on the camera body and the lens with DeOxit (available at Radio Shack). Also make sure that all of the electrical contacts on the lens project out the same distance. They are spring loaded and can get jammed in. If the lens won't AF after cleaning and checking the electrical contacts, there is something wrong with the lens. If you know someone with a Nikon DSLR, for a final check, you could mount the lens on their camera. If it doesn't work, the problem is defintely with the lens. If you purchased the lens from a Dealer, they should take the lens back or pay for the repair. If you used a credit card, contact the card issuerer and check to see if they have buyer protection coverage. Good Luck and Enjoy your Nikons!
Turns out it was just a bad lens. That's what I get for ordering a used lens. At least Amazon refunded my money. Decided to buy a new one and thankfully due to a rebate I found it was only $70 more.
Just had a chance to use the lens yesterday (it shipped earlier than expected)to shoot my son's varsity high school baseball game. The lens performed well. I got about 400 clean shots, very clean lens with great clarity and detail. The auto-focus worked well (pretty fast, even at 300mm)and vibration compensation also was great.
Only thing I need to get used to is the added weight. It feels about twice as heavy as my Nikon 55-200 zoom lens, and zooming the lens feels stiffer than my Nikon lenses. I missed a few outfield shot because I couldn't find the play in my view finder while quickly zooming and auto focusing at the same time. But as always practice makes perfect! Thanks for all the responses and advice.