there are a whole bunch of good K/M mode zooms both by pentax in the late 70's and joined by third parties in the 80's. We didnt even discuss third party lenses but add in all those and there are millions and millions of perfectly good nice lenses that could be substatially more usable with K/M AE as opposed to the green button kludge... jco
-----Original Message----- From: Pål Jensen [mailto:[EMAIL PROTECTED] Sent: Thursday, September 22, 2005 5:02 PM To: pentax-discuss@pdml.net Subject: Re: Camera engineering ( GREEN BUTTON has just officially DIED...) ----- Original Message ----- From: "J. C. O'Connell" <[EMAIL PROTECTED]> > If you are using a variable aperture zoom > then EVERY TIME YOU CHANGE ZOOM SETTING > you have to do the green button slavery > because the real aperture is changing and > green button mode doesn't take that into > account. How many variable speed K and M zoom lenses are there? If they exist at all, do you really want to use them? Pål