Jens, I think I exercised it 1000 times. Didn't make a difference. Off to Pentax Sweden with the M28/2.8 and yes, they could fix it for 788 SEK, that's about 110 USD. I think you could have one on ebay for less. the question is however, how prone old M-lenses are for this kind of disease. I have at least two with SAS. Peter
This was what I suggested, wasn't it - slow aperture syndrom? >Don't clean the blades. Just exersise the aperture mechanism with your >fingers before use (that is if there's no oil etc. on the blades). 100 times >usually does it - for a while, anyway :-) > >Jens Bladt >mailto:[EMAIL PROTECTED] >http://hjem.get2net.dk/bladt > > >-----Oprindelig meddelelse----- >Fra: Peter Smekal [mailto:[EMAIL PROTECTED] >Sendt: 29. marts 2005 16:54 >Til: [email protected] >Emne: RE: RE *istD overexposure with manual lenses > > >Yes, >you'r probably on the right track. Its getting gradually worse with smaller >apertures. Mmm... I've never cleaned lens blades ... sounds tricky. The >question is how much Pentax would take for that kind of job. >Peter > >>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 >>> >>> >>>
