Re: white balance + flash on canon 40D
- On Monday, December 03, 2007 at 4:07, brontvain wrote:
> So what is more recommendable?shooting RAW and setting WB afterwards ;-)
> - use the flash on the reference shot?Normal flashes where designed to work with daylight film. And this
> - use always the preset wb "flash"?
hasn't changed much since digital times. The color temperature of a
flash can not be changed by software, you only can use filters or
colored reflectors. Since the flash bulb has a somehow higher color
temperature, most diffusor glasses on system flashes are slightly
yellow to achieve a color temperature of about 5500K. This coincides
with the normal "Daylight" WB setting of the camera.
It seems, that the "Flash" WB setting is mainly intended for studio
flashes, which don't have such yellow diffusor glasses. At least the
However, if you shoot panoramas with a flash you most likely use it
either as a fill-in flash or as an indirect flash that lights the
A fill-in flash should be adopted to the scenery color temperature
(if you shoot during sunset you spoil all the atmosphere with a 5500K
flash). Filter sets for different color temperatures are available.
If you use the flash indirectly you should take into account the
color of the reflecting material. If it is bright white it won't
alter color temperature much, but you can get pretty chinese faces if
you point an indirect flash against a wooden ceiling (and use
daylight WB ;-)
So as always the answer is - it depends....