> On Oct 5, 2016, at 4:53 PM, P.J. Alling <[email protected]> wrote: > > That is how the *ist-Ds worked as it didn't have a dedicated green button. > Also I think that Bruce meant M not Tv. At least on the K20D and K-5II > pressing the green button with a SMC Pentax [K] or M lens does nothing in Tv > mode, but in M mode it stops the lens down and sets the more or less correct > shutter speed. > > The other option is in M mode with the DOF programmed to optical preview, you > can hold the on/off/dof lever in and use continuous stop down metering kind > of like an old Spotmatic, but more awkward as the DOF doesn't lock in place > the way id did with one of those ancient M42 mount cameras.
Thanks, Peter. I’ll check out both options with one of my A lenses. ------------------------------------------------------------------------------------------ Eric Weir Decatur, GA USA [email protected] "What does it mean...that the world is so beautiful?" - Mary Oliver -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
