Sigma lens is sticky - Nikon F65 35mm SLR Camera

Question edited for clarity.

You get the Sigma lens for the camera in Canon fit.

https://www.google.com/search?q=sigma+lens+af+75-300+for+canon+rebel+xti

Can you use Sigma lenses on Canon cameras?
Since Sigma lenses are made to be fully compatible with Canon cameras, they are backwards-compatible. This means that you can use a Sigma lens on a Canon DSLR camera. Similarly, the Sigma cameras are backwards-compatible with Canon lenses. Macro adapter loses the AF feature.

https://www.google.com/search?q=sigma+lens+af+75-300+mount+adapter+ring+for+canon+rebel+xti

Sigma makes some lenses for Nikon cameras-- though the Nikon D40 requires a lens with its own internal focusing mechanism, since it does not have an autofocus motor. This entirely depends on what Sigma lens you have, i.e. if it were a Sigma lens made for a Canon camera, yes there would be an adapter for that-- but the likelihood of success is less with the limitation of the D40 needing an internal focus motor on the lens.

Assuming you get the lens with a Canon mount, yes. Sigma makes lenses to fit a variety of makes, but each one has a different mount. A lens intended for a Nikon, for example, will not fit a Canon.

did the lens get hot (closed in hot car)?- probably melted some of internal lubricant and /or adhesive on rubber rings or caused the rubber ring itself to start to deteriorate

Please visit to:

http://www.sigmaphoto.com/sigma-lens-finder

Hi It sounds as if the lens may have had a impact to it the cost would be around £90.00 TO £250 if in the uk email me [email protected]

No. You can buy an adapter to fit a Nikon lens onto a Canon, but not a Sigma.

Hi You need to remove all the sticky stuff we use a car brake cleaning solution on a rag and wipe off the sticky it is a dirty job keep changing the rag remove all the black cotaing

All auto-focus lens have some sort of 'chip' inside .. Sigma 'reversed engineered' Canon's chip - however every time Canon brings out a new camera there is a chance the Sigma lens chip won't work (this is why you see lots of Sigma lens on eBay :-) )

IF you can prove you purchased your lens direct from an authorised Sigma dealer, Sigma will update the chip for free .. otherwise they charge about £35 .. you pay postage in both cases ..

Visit the Sigma web site for further info.