I tried matrix, center-weighted, and spot. Same result. Rick
--- Paul Sorenson <[EMAIL PROTECTED]> wrote: > Just taking a WAG here...what metering pattern were > you using...matrix > or center weighted? Is it possible matrix metering > was compensating for > the closer target being over exposed? > > -p > > Rick Womer wrote: > > I was wondering why the flash exposures I get with > my > > K10D and Sigma EF500 DG Super aren't as reliable > as > > those I got in the hazy past with my PZ-1(p) and > > ancient (but TTL capable) Sunpak flash. > > > > So I repeated an experiment I had performed with > the > > PZ-1p and Sunpak: I had two targets of similar > shade, > > one close (~1.5m) and one distant (~5m) in the > same > > ambient light in the same room. Focusing on the > near > > target and photographing it led to a perfectly > exposed > > near target and underexposed distant target (which > is > > as it should be). Focusing on the distant target > led > > to a perfectly exposed distant target and > overexposed > > near target, even though the two targets had the > same > > positions in the frame in the two situations. > This > > told me that the PZ-1(p) used distance information > > from the lens in calculating flash exposure. > > > > Last evening I performed the experiment with the > K10D > > and Sigma flash. No matter which target I focused > on, > > the near target was always properly exposed and > the > > distant target underexposed. Thus it appears that > > this camera-flash combination does not use > distance > > information in its flash exposure calculations. > > > > It would be interesting if someone with a Pentax > 540 > > flash would try the same experiment. Is it the > camera > > or the Sigma (reverse-engineered) flash that is > unable > > to use the distance information? > > > > Rick > > > > > > http://www.photo.net/photos/RickW > > > > > > > > > > > -- > 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.
