I have lens that does not fit my Nikon or Canon. Can someone tell me what camera this lens is for?
Photography Stack Exchange is a question and answer site for professional, enthusiast and amateur photographers. It only takes a minute to sign up.Sign up to join this community
This is the Sigma SA mount. https://en.wikipedia.org/wiki/Sigma_SA-mount
which is like a cross between the pentax K mount (mechanically) and the canon mount (electronically)