Actually, that's not the case, the *istDS2 was the last camera from Pentax to support plain TTL (IIRC it used the PZ-era Digital TTL spec rather than the LX-era Analog TTL), the Samsung GX-1S was the last production camera to support it (It lasted longer than its sibling, the DS2).
-Adam On Thu, May 22, 2008 at 11:00 AM, AlunFoto <[EMAIL PROTECTED]> wrote: > Rick, > The *istD was the last camera to support the old analogue TTL. For TTL > flash with K10D you need a P-TTL compatible flash. > > Jostein > > 2008/5/22 Rick Womer <[EMAIL PROTECTED]>: >> 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. >> > > > > -- > http://www.alunfoto.no/galleri/ > http://alunfoto.blogspot.com > > -- > 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. > -- M. Adam Maas http://www.mawz.ca Explorations of the City Around Us. -- 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.
