Ok, I'll try to duplicate your basic test with my flash and DA* 16-50 and see what I get.
So if I understand, I should set the camera to manual exposure and set the flash to manual zoom. Probably shoot at a neutral target that looks just the same no matter what the zoom on camera and flash are - like a big, blank wall. Then shoot at each zoom range of the flash. I assume that the lens should be at the same focal length as set on the flash zoom. Does this sound about right for the test? -- Best regards, Bruce Friday, July 10, 2009, 10:11:20 AM, you wrote: A> 2009/7/10 Bruce Dayton <[email protected]>: >> How did you happen to notice this behavior? A> Many of the DA lenses will focus closer than the recommended minimum A> distance for the flash. I was going through how my various lenses A> performed with the flash at close focus. This experiment turned out A> quite well, in the sense that P-TTL copes with the short distances. A> However when playing with the DA*16-50 I decided to check if it was A> consistent across the zoom range of the lens. The flash was set for A> auto zoom to match the zoom setting on the lens. That's when I got A> overexposure on the long end. Same thing with DA 16-45/4. That's when A> I switched to manual zoom and compared the flash output at each A> setting. A> Jostein -- 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.
