White Balance / ND filters

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Guest

Guest
When my lighting conditions change and I white balance, under what conditions should I do it? With ND filters off? Iris open to full? what about the scene settings? Any input is helpful, thanks.

Nguyen x 2
 
Re: White Balance / ND filters

If the light conditions change and you need to white balance again, do it at whatever settings you're using to shoot with. There are no special settings you need to be using to white balance.
 
Re: White Balance / ND filters

Right -- aperture and ND filters are irrelevant, since neither have any effect on the color of the light.
 
Re: White Balance / ND filters

You should only WB when the color temperature of the light in your scene changes. i.e. moving from indoor to outdoor. Ideally you should WB by placing a white card where your principal talen would be, lit with the scene's lighting running and the camera set to the correct aperature. This should give you a true WB.

HTH,
Chico
 
Re: White Balance / ND filters

If you do plan on using any gels on your lights, and you want to preserve a specific color effect, then white balance without those gels, then put those gels on for your scene. Your white balance will be correct for you to retain the disired color effect of your lighting.

Happy Shooting!
Hmi5600
 
Re: White Balance / ND filters

my habit is to hit the auto exposure before white-balance.. i know that exposure shouldn't affect.. but... i think it does :-/
 
Re: White Balance / ND filters

It shouldn't affect the WB color (exposure that is), but too much or too little exposure and it won't WB. For that reason I usually flip on AE as well when I WB if it's looking too bright or too dark.
 
Re: White Balance / ND filters

SirAllen is correct. If your exposure is too far to either extreme, the camera will refuse to white balance, so hitting the AE button will put you in a workable mid range.
 
Re: White Balance / ND filters

Another vote for setting exposure before WB'ing. (Any time Shai says something, I find it good advice to listen -- Shai's been a great resource for this board.) So while on the surface it seems like exposure shouldn't matter much (obviously within the limits of "level over", etc, as Mark & SirAllen said), there might be a circumstance that could maybe arise, where, for example, one of the CCD's might be getting a little overexposed, and thus biasing the white balance. Like maybe in the presence of a strong blue light source -- maybe the blue CCD would just tip into overexposure, and the red & green wouldn't... I don't know that that happens, but it seems like something that could maybe happen... so setting your exposure into a workable range seems like it can only help, and certainly never hurt.
 
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