John, Interesting question. It appears that the lens has 5.6, 8, 11 and 16, but not 22 (which is labelled on the aperture ring). The aperture goes from wide open at 5.6 to way stopped down at 16, but does not stop down further when you set it to 22. I've had a few generic adapters apart (as well as a few 'K' mount lenses) and I know the setup is sensitive - I'm not going to play with this one, but maybe somebody else knows if the "missing one stop" is a common condition for TX to K adapters (?) The aperture position tab does move when the ring is moved from 16 to 22, so the camera body would be fooled into metering for f/22, even though the lens was actually at f/16 (maybe I should reduce the price by $15?).
Jim www.jcolwell.ca ---<John's question>--- Jim, Question about the vivitar 400 tx mount. I have a vivitar 300 tx mount. Lens has 5.6 but with TX to PK mount the max f/stop is 8. Is the 400 the same? Thanks, John --- Jim Colwell <[EMAIL PROTECTED]> wrote: > See PENTAX SALE at www.jcolwell.ca > > I'm selling a lot (but not all) of my Pentax K > & compatible lenses, film > cameras, flash & etc. including SMC Pentax K > 18/3.5, K 28/3,5, K 35/3.5, K > 50/1.2 and about 40 other lenses. Also a > recently CLA'd & repaired LX with > winder, finders & etc., a MZ-7, a two-flash > trailing curtain synch > off-camera system, and more. > > Jim > www.jcolwell.ca
