Hello Everyone,
Greetings from California!
Just recently ventured into shooting older manuals on K-50. I noticed that green button when programmed according to various guides (Ricoh website, and
this guide) allows green button to meter light when shooting in M mode with screwmount lens. However on K50, this function only works in Live View; through the viewfinder, green button does not change shutter speed but instead leaves it at 100 or some number that corresponds to the ISO. Is anyone else experiencing this? I am using SMC Takumar 50mm and a genuine Pentax m42 adapter.
Another interesting phenomenon: depressing green button will meter sporadically or rather arbitrarily when in VF given if I rotate the lens back and forth on the adapter and I hear metering (click sound). For the most part, it does not meter through viewfinder. Several similar accounts on this forum mention the lack of conductive base of some screwmount lens as culprit. Has anyone been able to circumvent this and achieve accurate metering when depressing green button in viewfinder?