Just shoot everything wide open. Embrace the softness. ;) On Sat, Jun 14, 2014 at 6:41 PM, Zos Xavius <[email protected]> wrote: > Yeah, sorry about your troubles Bruce. I don't really understand how > the camera electrically controls aperture with A lenses onwards, but > triggering the aperture itself is still all mechanical. I had a > feeling that it might be something bad in the movement of the lever. > If you are getting correct EXIF information (focal length, selected > aperture, etc), then the lens is probably communicating with the > camera ok. I try to keep a cheap AF 28-80 around as a beater/emergency > lens. My current FA28-80 is pretty banged up and needs replaced with > something slightly more robust. Hope you have something that will work > out for your shoot. > > On Sat, Jun 14, 2014 at 6:09 PM, Bruce Walker <[email protected]> wrote: >> No and no. The EXIF records what should have happened, not what I get. >> Zooming apparently mechanically sticks the aperture wide open. >> >> >> On Sat, Jun 14, 2014 at 6:04 PM, Attila Boros <[email protected]> wrote: >>> Sorry to read that. Can you stop it down in DOF preview? Is the >>> aperture recorded in EXIF data correct? >>> >>> On Sat, Jun 14, 2014 at 11:08 PM, Bruce Walker <[email protected]> >>> wrote: >>>> I think I know the answer to this, but what the hell. >>>> >>>> I'm testing a lighting setup today. K-3 on M, remote triggered flashes >>>> for light. Settings are around 1/125th, ISO 200, f:11. >>>> >>>> So I zoom in on my test object, ~35mm, shoot, exposure is perfect. I >>>> pull the zoom out, 16mm, shoot, exposure is _wildly_ off. Lightroom >>>> suggests at least 4-5 stops overexposed, but it's madly clipped. WTF? >>>> This is repeatable. But every once in a while, like after >>>> power-cycling K-3, the exposure is right. >>>> >>>> Long story short: cleaned the contacts of both K-3 and 16-50, nothing. >>>> Swapped an 18-55 in and bingo! 100% perfect exposure at all zooms. >>>> >>>> So it looks like the DA* 16-50 is failing to stop down for the shutter >>>> under some circumstances, like very wide zoom. Has anyone else >>>> experienced this? Is it something that one can fix, eg by giving it a >>>> good smack? :-) >>>> >>>> Thanks! >>>> >>>> -- >>>> -bmw >>>> >>>> -- >>>> 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. >>> >>> -- >>> 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. >> >> >> >> -- >> -bmw >> >> -- >> 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.
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