Originally posted by Kuzma Does it have an aperture ring?
sorry for the late answer.
On this adapter :
K&F Concept Lens Adapter for Pentax PK/DA Lens to Fujifilm Fuji FX Mount Camera K&F Concept Lens Adapter for Pentax PK/DA Lens to Fujifilm Fuji FX Mount Camera | eBay
There is an aperture ring, well it works like an aperture ring but it's not precise at all.
On my M 28mm /f2.8 Lens it works like this.
You set the min aperture (/f22) on the lens itself and then the aperture ring on the adapter will range from max aperture of the lens (/f2.8) to minimum aperture you set, in only 7 steps/clicks
Which means that if you set a min aperture of /f8 you have more precise control on the 7 steps.
I havent tried with lens with no aperture control, ie DA lens for example.
So Im using this adapter only with lens with aperture ring, and I control the aperture with the ring on the lens, not the ring on the adapter.
The next image is taken with the SMC M-28mm /f2.8