Jostein, Do you mean FGZ? I thought the FTZ didn't do P-TTL. Or are you shooting it on an *istD?
--M. -- -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- http://www.EnticingTheLight.com -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- 2009/7/10 AlunFoto <[email protected]>: > Gang, > > My AF540-FTZ has a quirk which I wonder if you guys could help me > consider for warranty claim. I'm pretty sure this can't be right... > > The flash has various zoom settings, from 16mm to 58mm. When the flash > is zoomed to 48mm it gives 1.5-2 stops more light than at other zoom > settings. The TTL seems to work because I get consistent histograms > for all apertures on the lens, but the exposure is just two stops > brighter. Quite often this leads to blown highlights. I have tested it > with various lenses, and the behaviour is consistent. > > I would have expected some variation as the flash zooms in and out, > but I can't figure any rational reason for why it should provide more > output at 48mm than the other zoom settings... > > It _is_ a bit weird, isn't it? > > Jostein > > -- > 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. > -- 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.
