Originally posted by Erictator I echo your question Steve ^^^^^^^^^ As with a lot of adapters, if they add a layer(s) of glass to the optical path, it usually isn't good news. With the adapter that thick as pictured, I would think it would HAVE to have something in there, otherwise you would loose infinity focus and it would act like a (25mm? or more from the looks of it?) extension tube.
Eric
It doesn't look any
longer than the K&F Concept PK to NEX adapter I currently use (back to the discussion on flange length). I'd be surprised if they designed it with glass, considering it'd be suitable on APS-C Sony cameras with APS-C or FF Pentax Lenses, or FF Sony with FF (and a select few APS-C) Pentax Lenses.
The only rationale I'd see for making one with glass would be for 'speed booster' type approaches for APS-C or M4/3 type cameras.
Given the current market for AF adapters, I'm sure the price will be upwards of £150, probably towards the £200 mark. That said, it's coloured me intrigued.