White balance is you or your cameras guess at what true white should be,
which dictates what the other colors in your photograph should be.
Depending on what you’re shooting, your photographs can come out a number
of different tones that may or may not be what the correct color of the natural
light you're shooting in. White
balance is used to avoid unwanted color tones that might make for unrealistic looking
photographs. The last thing I want
to do after getting my exposure right in a photo is go home and edit the color
cast in the photo if I didn’t have to edit it. (Not counting editing for fun).
The
different modes for white balance on my camera are shown by an assortment of
icons representing Auto White Balance, Custom, Kelvin, Tungsten, Fluorescent,
Daylight, Flash, Cloudy and Shade.
By experimenting with each white balance you can determine which looks
most natural, meaning it doesn’t have a green, blue or orange overcast. For example if you go outside and set
your white balance to tungsten light, your photo will come out blue because
tungsten is used to cool down any false light that might create an orange tone. Tungsten turns natural light blue. Auto White Balance is what I normally
revert to when shooting outside, simply because I don't take the time to experiment.
The camera usually guesses natural light accurately enough for me, I’ve
noticed. However after shooting this assignment I'm going to start being for conscious of what white balance I use. Shooting indoors can be tricky. Whether you’re in a coffee house or a
church or a house or an office, the color cast of the unnatural manmade light
can be an undesired effect that can be countered by experimenting with white
balance.
To
set a custom white balance you need a target or a grey card or even possibly
part of the scene that you’re in that might be neutral. When I used to photograph weddings with
a local photographer, I used to hold his target so he could set a custom white
balance at the church if the tone of his photos tended to be a bit extreme on
the warm side. If we didn’t have time for the target, he would should part of
the brides wedding dress in the hopes that we could get an accurate reading.
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