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.
