Sort of responding to the hijacker :-) The stopping down of "auto" lenses will never happen (to the best of my knowledge) using a screw mount to K adapter.
The small button on the back of the lens (similar I would think to the Auto Takumar and SMC Takumar screwmount lenses) stops down if the lens is in "A" or "auto" mode; thereby allowing for wide open aperture for focusing and composing and stopping down at the point where the shutter is snapped. Anytime I've used the screw mounts with the K adapter, I've had to use manual settings - basically standard average metering and adjust the aperture till the meter is bang on. I've never known of or been able to figure out if what you're asking is actually possible; that is, being able to focus and compose wide open but allowing only for stopping down at the point where the shutter is snapped. Not much of an answer, I know, but ... I did precondition this with "sort of responding" now didn't I :-) Cheers, Dave Original Message: ----------------- From: Michael Yehle [EMAIL PROTECTED] Date: Wed, 21 Aug 2002 17:21:05 +0200 To: [EMAIL PROTECTED] Subject: Re: using a screw to K mount adapter Sort of hijacking this thread with a stupid question: I've got the M42-Pentax K/M adapter (no brand info) and 2 threaded lenses - Pentacon auto 1.8/50 and Hanimar Auto "s" 135/2.8. Both nice and clean but neither of them seem to stop down. They both have a small button on the back to close the apperture and the adaptor seems to lack a way to hold it in. What am I missing???? TIA Mike Y. - -------------------------------------------------------------------- mail2web - Check your email from the web at http://mail2web.com/ . - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
