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How does it not work? Is it not focusing? Is the exposure metering not working? Are you getting an error message either in the viewfinder or the LCD?
We want to help you, but we cant' read your mind (or see your camera).How does it not work? Is it not focusing? Is the exposure metering not working? Are you getting an error message either in the viewfinder or the LCD?
We want to help you, but we cant' read your mind (or see your camera).
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The D40 does not have a lens motor, it uses lenses with their own motors--the problem is your lens, not the camera. Try a different lens to confirm, then send your lens back to the factory for service.
1 Possiable dirty lens contact terminals
2 Auto focus motor in lens is jamed/malfuntion
3 Auto focus engagement pin on camera body is not engaging the lens
4 Correct lens,old nikon lens and some 3rd party lens wont work on the D40
You have to make sure you bought the sigma lens with a NIKON mount. Sigma makes a Sigma mount as well as a Canon mount, of course neither of those mounts will work with your camera. Also you must also make sure your lens is the Sigma 70-300 HSM (/Hyper Sonic Motor) or it will not AF on the D40. I just bought this lens from Abes of Maine and I love it on my D40.
How does it not work? Is it not focusing? Is the exposure metering not working? Are you getting an error message either in the viewfinder or the LCD?
We want to help you, but we cant' read your mind (or see your camera).
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