Will try it, Jens,
should be a good workout :-)
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: pentax-discuss@pdml.net
>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: pentax-discuss@pdml.net
>>> 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: pentax-discuss@pdml.net
>>> >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
>>>
>>>
>>>
