Hi Alan
rather than wait till tomorrow, I've just unboxed the adapter, popped it on the A73 and taken a couple of shots. Nothing definitive, just an initial impression only.
i don't have another M42 adapter, so in terms of weight/build, etc, i have to compare it to my K&F Canon FD (original version).
My thoughts are;
feels slightly'weightier'/better quality than the FD adapter
a couple of v. small sharp edges on the bayonet side, but similar to my FD adapter
Claimed better internal 'anti reflective' covering (paint or whatever) looks to be about right - but not confirmed with any photos I've taken
Although the lens markings are not exactly where I would ideally want them, they are close enough that it doesn't matter to me. A photo taken at 'infinity' seemed to be OK with focus peaking appearing to be OK at infinity (reached just before the infinity stop on the lens but so close to make no real difference).
Photo attached with the adapter on my Sony. You'll see the pro wording and the orangey/gold coloured band, which I'm sure I've read somewhere is supposed to match the Sony lens mount.
I confess to having been a bit confused before buying this adapter. I'm well used to the original K&Fs. But i then read about version 2s which are all brass and then the Pro version pops up and I couldn't get my head round whether the version 2s and the Pro are the same adapter. Anyway, I couldn't see this particular adapter on the K&F site and after several discussions with a seller on E-bay, bought one of his adapters which were unused (he did have another for sale - let me know if you'd like details).
Hope some of this helps.
Stuart
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