Nikon Lens from ebay but doesn't fit. How do I know?

<p>Hi.</p>

<p>I just bought a lens on ebay. TAMRON 17-50MM F2.8 FOR NIKON AF/ DIGITAL ZOOM EX+CNDTN is how it was listed.<br>

Seller said it was for Nikon and would work on my D200. I just got it and it seems the mount is too big. Is there any way to tell if a. I'm being dumb and am not putting it on right or b. Find out which camera mount this is actually for? There is no box or paperwork, just the lens. <br>

<br />Is there a way to find out from sellers on ebay other then trusting them to give the right description? Or is there a way to mount this lens onto my Nikon?</p>

<p>Thanks!!</p>

<p>What is the model number printed on the lens itself?</p>

<p>DA09? I'm not sure if that's it.<br>

Or I guess this is the serial number? 087584?</p>

<p>If not where would I find it?</p>

<p>or Rather A16? Sorry I think that's it.</p>

<p>If you show us a photo of the lens mount it would help out a lot</p>

<p>I second the suggestion of showing a photo of the mount...It will be easy to tell from one...</p>

<p>My guess is it can only be used for the smaller cameras? D40, etc?</p><div></div>

<p>The Nikon F mount hasn't changed to the point that any lens (especially 3rd party ones) won't fit any of Nikon's current offerings other than Pre-Ai Nikkors or mirror lock up lenses..What fits a consumer grade body will fit a Pro series body & vice versa</p>

<p>Hmm. So then why is this mount bigger then my D200 mount? I looked up A16 and it seems like that model is made for Nikons.</p>

<p>There aren't any lenses that can only be used on smaller cameras, except for the old "IX Nikkors" for the Pronea APS cameras. And even they had the same size mount, just a little protrusion to keep them from mounting. This is too new, and a Tamron. A Nikon mount 17-50mm f2.8 Tamron will mount on any Nikon digital, even FF models, although it will vignette.</p>

<p>Your picture is still loading, so I can't see your lens, although the mount is starting to come into view. Still loading. Still loading. Oh shit, that's most definitely not a Nikon mount!</p>

<p>Nikon isn't the only manufacturer to use a "bayonet" style mount. Minolta used to & so did Konica. The "A16" has nothing to do with what camera the lens will mount on but only as an identifier as to the type of lens...Older lenses would have an identifier as to which camera system they fit, but AFAIK that isn't always the case anymore...Nikon's mount would show as N/F or N/AI, Konica would have been K/AR just to show a few examples...Here is a link to some mount ID photos from older film lenses for examples<br>

http://rick_oleson.tripod.com/index-99.html</p>

<p>Arg! Ok thanks.<br>

<br />Any ideas what mount this is for?</p>

<p>Your picture looks like the Canon mount for this lens. Model A16E is Canon, A16N is Nikon mount, as far as I can tell from comparing the boxes with model numbers of the two on ebay.</p>

<p>5 contacts on a shelf, 2 contacts lower, that's most definitely a Canon EOS mount.</p>

<p>You need to have a long talk with your seller.</p>

<p>Sounds like the seller didn't know what it was and made a mistake. He should take it back and refund your money since it was his mistake. </p>

<p>Kent in SD</p>

<p>Thanks for everyone's help! I've already contacted the seller and he's agreed to give me a full refund.</p>

<p>Amazing how much help you can get around here in 51 minutes on a Saturday night!</p>

<p>Nikon Lenses have sphere shaped contacts on the outside of the lens body..Your phot shows flat contacts inside the camera mount...It isn't a Nikon mountable lens</p>

<p>Here's a smaller in-line display of the picture above. It's pretty clearly a Canon EOS mount.</p><div></div>

<blockquote>

<p>Amazing how much help you can get around here in 51 minutes on a Saturday night!</p>

</blockquote>

<p>No kidding.</p>

<p>A Nikon lens with electronic contacts looks very different. First of all, the Nikon electronic contacts are on the top end of the mount while the Canon contacts are at the bottom. Nikon contacts are spring loaded and face outward, away from the center.</p>

<p>Here is an image of the new Sigma 70-200mm/f2.8 OS for Nikon and Nikon 70-200mm/f2.8 VR ii side by side.</p>

<p><img src="http://d6d2h4gfvy8t8.cloudfront.net/12763837-md.jpg" alt="" /></p>

<p>Which feature does the red arrow indicate, Shun?</p>

<p>The red arrow points to an extra notch that is on the mount of most (but not all) AF-S lenses. That notch mates with the extra tab on those TC-nnE teleconverters. Nikon lenses that are not AF-S (and AF-I) do not have that extra notch so that those TC-nnE cannot be mounted on them. (There are a lot of discussions about filing off that extra tab to use those TCs on AF/AF-D type lenses.)</p>

<p>For whatever reason, Sigma does not put that notch onto their new 70-200mm/f2.8 OS lens so that it is not compatible with those TC-nnE teleconverters, unless you modify your TC. When I first tried that Sigma lens, I was surprised that it was not compatible with my TC-14E.</p>

<p>P.S. The rear mount on those TC-nnE teleconverters also do not have that extra notch, thus preventing you from mounting multiple TCs together in tandom.</p>