Originally posted by Ernie H Thank you Adam for the free use of this post,
I am a Nikon owner, but I am asking this question on behalf of a friend, who owns a sigma camera and lenses, camera died years ago, Then bought a Pentax K-01, hoping to get an adapter to fit his Sigma 75-300, I have had no luck in this search so I wonder if any one here can shed some light on this possible union?, much appreciate ant and all assistance,
If the Sigma doesn't have a Pentax mount, I don't think it can be used. I'm not aware of any Sigma-to-Pentax adapters (and even if one did exist, it would have act as a teleconverter, and wouldn't have AF, which would defeat the point of using that lens in that first place). As an alternative, a second-hand Pentax-DA L 55-300mm can be had for a very affordable price.
Adam
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