Can anyone ID this mount?

[moggi1964]

I picked up a Sigma 24mm F/2.8 Super-Wide II AF but have no idea what the mount is?

I can confirm it is not Olympus OM nor is it Pentax K or M42.

Ta!

 

[nandbytes]

Pretty sure that looks like Pentax mount

Sigma AF Super Wide II 24mm F2.8 Lens Reviews - Sigma Lenses - Pentax Lens Review Database

Sigma AF Super Wide II 24mm F2.8 reviews and specifications. Auto focus successor to the Superwide II (several reviews of this lens were posted [url=https://www.. This is a Sigma Prime lens.

www.pentaxforums.com

 

[moggi1964]

Pretty sure that looks like Pentax mount

Sigma AF Super Wide II 24mm F2.8 Lens Reviews - Sigma Lenses - Pentax Lens Review Database

Sigma AF Super Wide II 24mm F2.8 reviews and specifications. Auto focus successor to the Superwide II (several reviews of this lens were posted [url=https://www.. This is a Sigma Prime lens.

www.pentaxforums.com

It is - I was trying the wrong adapter

Cheers!!

 

[Petrochemist]

Pretty sure that looks like Pentax mount

Sigma AF Super Wide II 24mm F2.8 Lens Reviews - Sigma Lenses - Pentax Lens Review Database

Sigma AF Super Wide II 24mm F2.8 reviews and specifications. Auto focus successor to the Superwide II (several reviews of this lens were posted [url=https://www.. This is a Sigma Prime lens.

www.pentaxforums.com

Yes relative positions of all the features (red dot, locking hole, contacts, aperture readout, AF screw & stop down lever) are identical. more specifically it's a PKA autofocus variant (probably KA2).

FWIW OM mount is easily recognised by the two buttons either side of the rear of the lens (lens release & DOF preview). M42 is slightly trickier as there is a T2 thread with the same 42mm OD but a finer pitch. Some adapter rings even label T2 threads as M42 (technically they are M42x0.75 while Pentax screw is M42x1)

 

[moggi1964]

Yes relative positions of all the features (red dot, locking hole, contacts, aperture readout, AF screw & stop down lever) are identical. more specifically it's a PKA autofocus variant (probably KA2).

FWIW OM mount is easily recognised by the two buttons either side of the rear of the lens (lens release & DOF preview). M42 is slightly trickier as there is a T2 thread with the same 42mm OD but a finer pitch. Some adapter rings even label T2 threads as M42 (technically they are M42x0.75 while Pentax screw is M42x1)

Thank you for the detailed information. I hadn't realised that I had both my OM adapters on the table in front of me, thinking one was a PK. So when neither fit I came to the obvious conclusion...which turned out to be I'm an idiot