New answers tagged lens-mount
0
Thanks @Nate S. for his answer.
This looks like the same thing, so yes, SA:
https://www.worthpoint.com/worthopedia/sigma-17-70mm-2-4-macro-dc-sigma-sa-1791976047
Solution is Sigma SA Mount
2
It appears to be an early Pentax "K" mount. The recessed Aperture Simulator slot opposite the Aperture control lever is the clue. This slot is clearly visible in your first photo.
There are lots of inexpensive adapters available to mount Pentax "K" mount lenses on your Canon EOS Rebel XS. This one costs about $15.
Vello Pentax K Lens to Canon EF-S-...
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