Peter, I just checked this and the aperture gets a lot more time to respond when the green button is pushed than during actual exposure. I'd bet on a sluggish aperture. Is it worse at smaller apertures? That would be a sure sign.
Don > -----Original Message----- > From: Peter Smekal [mailto:[EMAIL PROTECTED] > Sent: Tuesday, March 29, 2005 8:35 AM > To: [email protected] > Subject: Re: RE *istD overexposure with manual lenses > > > Jens, > > its only two of the lenses that behave that way (M28 and M50/1.4). The > other work just fine. > > Peter > > Nope! > >All my old lenses work just fine (A20, A28, M35, M1.7/50, K105, K135, > >M4/200, M*300) - even my two Tamron Adaptall lenses work fine). > >A possible explanation could be that old Pentax "slow aperture syndrom" - > >the lenses stop down to slowly - if the have not been used for a > long tim or > >been sitting on a camera. But I guess it would be impossible for ALL of > >them to act this way?? > >You must have a firmware problem! > >Jens > > > > > >Jens Bladt > >mailto:[EMAIL PROTECTED] > >http://hjem.get2net.dk/bladt > > > > > >-----Oprindelig meddelelse----- > >Fra: Peter Smekal [mailto:[EMAIL PROTECTED] > >Sendt: 29. marts 2005 14:27 > >Til: [email protected] > >Emne: *istD overexposure with manual lenses > > > > > >Hi folks, > >I was trying out some of my K and M lenses on the *istD: 24/2.8, M28/2.8, > >35/2.8, M50/1.4, M85/2. I was really looking forward to use some of these > >old pearls. The strange thing is that I get very overexposed > pictures with > >the M50/1.4 and the M28/2.8. I am using the M mode + the green button. > >Firmware is updated. Any explanation? > >Peter > > >
