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.
