Op Wed, 20 Feb 2008 19:38:01 +0100 schreef Walter Hamler <[EMAIL PROTECTED]>:
> OK. I am clueless. > > I put the 18~55 DA lens on the K1000 body thinking it would only work > at WO aperture because it has no aperture simulator. However, when I > actually looked at a slow shutter speed, it appears to be stopping > down to 16 or 22. I tried my other DA lenses and the same thing. Why > is my thinking wrong here? Bodies that can't control the aperture simply push the aperture lever on the lens to close down the aperture as far as it will go. An aperture ring on a lens physically stops this action at the selected aperture. Since your lens does not have an aperture ring, the body will completely stop down the lens. The aperture simulator is a mechanical feedback device, not the lever used to stop the lens down. See bdimitrov.de/kmp for all you never wanted to know about all K-mount incarnations. > I shot a series of exposures at 21mm setting, and the prints show a > definite vignette, but the usable area is much bigger than the digital > sensor size. I am going to scan some negs and crop to see how an 8x11 > looks. > > Somebody please tell me how this stuff really works :-) > > Walt > > BTW, the Alt-Print Screen does nothing to capture a screen shot. My > keyboard says "System Required" on the Print Screen key. ??? Maybe you don't have a system? :o) -- Ciao, Lucas -- 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.
