This is the reason I got myself a copy of the Sigma 17-70/2.8-4, very cheap and an admirable performer. A great stop-gap whilst your otherwise indispensable glass is in for service.
On 15 June 2014 10:58, Bruce Walker <[email protected]> wrote: > Heh! :-) Inconvenient to do f:2.8 with flashes, but I can use the > lens as long as I keep it between 35mm and 50mm. In a pinch I could > use my 18-55 too. It would be up around f:8-11, and it's reasonably > sharp there. > > I have to admit I'm questioning my informal policy of only owning one > set of glass. Backups are a good plan in just about all aspects of > life. > > > On Sat, Jun 14, 2014 at 6:42 PM, Zos Xavius <[email protected]> wrote: >> 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. >> >> -- >> 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. -- Rob Studdert (Digital Image Studio) Tel: +61-418-166-870 UTC +10 Hours Gmail, eBay, Skype, Twitter, Facebook, Picasa: distudio -- 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.
