I believe the DS2 was pretty much the same, as far as hardware was concerned, the same as the DS which supported both Analog and Digital TTL.
Adam Maas wrote: > 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 >>> PDML@pdml.net >>> 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 >> PDML@pdml.net >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> to UNSUBSCRIBE from the PDML, please visit the link directly above and >> follow the directions. >> >> > > > > -- Vote for Cthulhu. Why settle for a lesser evil... -- Dr. Jerry Pournelle -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
