Without doing it I can only use the lens wide open, because the new cameras have no way of actuating the stop down rod at the time of exposure. If the rod is pushed in permanently then the aperture ring actually stops the lens down. That way I can use it at all the f stops, metering at taking aperture on Manual mode (on the istD). I probably could use it in Av mode too...hmm...

I'm thinking of trying to push it in and then sticking some wax in the hole. If it holds it ought to be reversible.

At 4:47 PM -0500 5/14/05, George Sinos wrote:
I'm just curious, Alan.  Why do you want to do that?

GS

On 5/14/05, Alan P. Hayes <[EMAIL PROTECTED]> wrote:
 >
 I've got a couple of SM lenses with the little push rod arrangement
 for stopping the lens down. Is there a simple solution to keeping it
 pushed in when using the lens with a screw to K mount adapter?
 --




--
Alan P. Hayes
Meaning and Form: Writing, Editing and Document Design
Pittsfield, Massachusetts

Photographs at
http://www.ahayesphoto.com/americandead/index.htm



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