You are DIGITALLY correct. Last I had noticed such was when I was using my late MZ-S. Hadn't considered the crop equivalent factor. Thanks, Jostine!
Jack --- On Fri, 7/10/09, AlunFoto <[email protected]> wrote: > From: AlunFoto <[email protected]> > Subject: Re: need help from AF540-FTZ owners > To: "Pentax-Discuss Mail List" <[email protected]> > Date: Friday, July 10, 2009, 8:26 AM > You had me check again, Jack... :-) > The highest zoom setting on the flash reads 58mm. > > Jostein > > 2009/7/10 Jack Davis <[email protected]>: > > > > Probably a dyslexic ;) typo, but doesn't the zoom > range from 16mm to 85mm? > > > > Jack > > > > --- On Fri, 7/10/09, AlunFoto <[email protected]> > wrote: > > > >> From: AlunFoto <[email protected]> > >> Subject: need help from AF540-FTZ owners > >> To: "Pentax-Discuss Mail List" <[email protected]> > >> Date: Friday, July 10, 2009, 5:08 AM > >> 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. > > > > > > -- > 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.
