The fluorescent colour problems don't exist with CFLs or newer electronic ballast fixtures. Between longer persistence phosphor and the high switching frequency, the light output is stable. CFLs are used a lot in video and still studio lighting.
This issue is probably seen with old-school transformer ballast fixtures and the big four-foot tubes. On Fri, May 2, 2014 at 12:06 AM, Bryan Jacoby <[email protected]> wrote: > I just confirmed that in Lightroom (4) even if two frames shot with > AWB have different temperature and tint you can batch adjust them with > the WB eyedropper and they will end up the same. So no reason to fear > AWB. > > It's worth repeating that any shutter speeds that don't take in an > integer number of florescent color shift cycles will be tough to > correct with a neutral reference (grey card, color checker, etc.) from > a different frame. > > On Wed, Apr 30, 2014 at 6:14 PM, Bryan Jacoby <[email protected]> wrote: >> I don't have Lightroom in front of me to test it out, but doesn't >> selecting a bunch of photos and using the white balance eyedropper set >> all of the photos to the same temperature and tint (versus the same >> _change_ to temperature and tint), which means that it will cause no >> headaches if AWB was used and each photo has a slightly different >> starting white balance? >> >> On Wed, Apr 30, 2014 at 6:05 PM, Godfrey DiGiorgi <[email protected]> wrote: >>> AWB will evaluate and adjust the wb setting each time an exposure is made. >>> They means if you're shooting a lot of exposures around a variety of subtly >>> different light conditions, each will vary a little bit from the others. >>> Each frame needs to be adjusted individually. >>> >>> Setting any fixed WB setting will hold that setting throughout your >>> shooting. It might not be optimal for the lighting condition, but if the >>> light is similar through most of the shoot, one adjustment can be used for >>> most or all of the exposures. >>> >>> Godfrey >>> > > -- > 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. -- -bmw -- 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.
