Received this adapter earlier this week. So far I've tested with an A7ii and the following lenses:- SMC Pentax-M 50mm 1.4- SMC Pentax-M 50mm 1.7- SMC Pentax-A 24mm 2.8- Tokina 24mm 2.8Pros: Solid, snug fit. Seems well made.Cons: Infinity focus actually is before the infinity stop on the lenses I tested. The same lenses focus at infinity properly on Pentax DLSRs. Also the 24mm Pentax lens exhibits severe vignetting at close focus regardless of aperture; the image projected from the lens doesn't cover the entire sensor...UPDATE: The extreme vignetting with 24mm Pentax legacy lens (that is, a full frame/35mm film lens) was a result an unusual lens hood that the lens's owner was using. It looks like most, if not all, adapters of this type allow legacy lenses to focus beyond infinity so I am moving this from 2 stars to 4.
14/06/2018
This works fine form my one bayonet mount Pentax lens to attach it to my Sony.
09/04/2018
11/03/2018
Works exactly as described. Solid adaptor with no issues. Great to use my old Pentax lenses again.
19/02/2018
Whats not to like about all metal design and mounts very secure to a6300
06/02/2018