The role of white balance

Estimated Reading Time: 3 minutes

This March has seen a wide range of weather, more than usual I think. Early Spring warmth and late winter coolness. Spring weather photography can inspire and to benefit we must always have a camera handy. There was even a good coating of sand from the Sahara giving exceptional sunsets. In March the sun is still relatively low in the sky which helps with the lighting. So why am I talking about the role of white balance? Because as I mentioned, the early spring warmth and winter coolness, and white balance is all about the warmth and coolness of light. Here are three examples where different lighting can make a big impact on the results.

Let me draw your attention to a camera feature that you may rarely look at: White Balance.

What is White Balance?

It can simply be put as the colour of the light, and this is defined by its temperature. If we use the noon sunlight to be the standard some light appears more orange, for example candles, and some appears bluer, for example modern car headlights. These are also referred to as being warmer, being orange, or cooler when bluer like a cold tap.

White balance values

Your camera, and phone are, by default, set up to take pictures using an automatic setting for white balance, AWB. You will find it in the menu, or expert menu. The role of white balance is to adjust the camera to compromise lighting conditions to take a good image in most circumstances.

The setting of white balance is creeping into everyday life too. This should make understanding it much easier. When you purchase LED lights they are defined by their temperature. Temperature is defined by 3 scales: Celsius (C), Fahrenheit (F) and Kelvin (K). Ice is defined as 0°C, 32°F and 273.15K. LED lights and White balance use the Kelvin temperature scale. For your cameras, a little counterintuitively, warmer candle like orange light has a lower temperature than the bluer clear sky. Typically the light from a candle will be 2000K and a cloudy sky 6500K.

How to set white balance

Why modify the AWB setting? Simply we want a white sheet of paper to look white when we photograph it. If we take the photo of the white paper in a candle lit room the paper will appear orange. The role of white balance is to tell the camera that this orange colour, the 2000K, is in fact white, which is about 5500K. The camera then has a simple addition/subtraction of some Kelvin to do to make our whites really white.

In the menu of the camera you may not find the Kelvin scale, but terms which relate to the typical light source for that temperature. So 2000K will be referred to by incandescent. 6500K as cloudy.

Using RAW is better

If you can take your photos in RAW, rather than JPEG, you have the added advantage that in post processing you can modify the white balance easily. This can be very useful, for example, when you are taking a series of photos of the same subject. A wedding is a classic example where the bride is dressed in white and you are photographing her in the garden, in sunshine and shadows, inside dark a building, around a candle lit table, in camera flash. All very different lights and therefore temperatures. If you don’t modify the white balance the dress will change in colour during your day.

Learn more

There are many resources on the internet which can explain all this in more detail and go further to explain how to set the white balance manually using the white object that you want to appear white in specific lighting conditions.

Take a look here, photographylife.com (opens in a new tab) for example.

Other photos

I have some other different lighting photos on my site, for example: Evening sunlight and lighting and shadows.

Some of my photos are available for purchase on my Adobe Stock store or the link in my fine art store (opens in a new tab).

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