Color Temperature and White Balance for Photographers: A Practical Guide
Incorrect white balance is one of the most common causes of photos that look off. Here is how color temperature works and how to get white balance right every time.
What Color Temperature Is
Color temperature is measured in Kelvin (K) and describes the warmth or coolness of a light source. Lower Kelvin values are warmer (more orange/yellow) and higher values are cooler (more blue). Common reference points:
- Tungsten/incandescent bulbs: 3200K (very warm/orange)
- Sunrise and sunset: 3500-4000K
- Daylight/midday sun: 5500K (neutral)
- Overcast sky: 6500K (slightly cool/blue)
- Open shade: 7000K (noticeably blue)
What White Balance Does
White balance adjusts the camera's color processing to render a neutral white under whatever lighting conditions you are in. If your white balance is set correctly, white objects look white. If it is wrong, whites look orange (too low a WB setting for warm light) or blue (too high a WB setting for cool light).
White Balance Presets
Most cameras include presets for common lighting conditions:
- Daylight/Sunny: For direct outdoor sun around midday
- Shade: For subjects in open shade outdoors — adds warmth to compensate for the blue cast of shade
- Cloudy: For overcast days — slightly warmer than Daylight
- Tungsten: For incandescent/bulb light indoors — adds significant blue to counteract the orange cast
- Fluorescent: For office or commercial fluorescent lighting
Auto White Balance (AWB)
AWB is reliable for outdoor shooting in consistent lighting. It becomes less reliable under mixed lighting (e.g., tungsten lamps mixed with daylight from windows) or under strongly colored artificial light. In these situations, setting a manual WB or custom WB produces more consistent results.
How to Set a Custom White Balance
Photograph a gray card or white piece of paper under the actual light in your scene. Then use your camera's custom WB function to designate that frame as the reference. The camera will adjust all subsequent shots to render that card as neutral gray/white. This is the most accurate method for tricky lighting situations.
The RAW Advantage for White Balance
If you shoot RAW, white balance is applied in post-processing and can be changed non-destructively with zero quality loss. AWB is perfectly acceptable for RAW shooters — you can correct it later. If you shoot JPEG, the white balance is baked into the file and getting it right in camera matters much more.
Should I use Auto White Balance or set it manually?
If you shoot RAW, AWB is fine — you can adjust white balance freely in post with no quality loss. If you shoot JPEG, manual WB or a preset gives you more consistent, accurate results. For indoor shoots with mixed or tricky lighting, a custom white balance is the most reliable approach regardless of format.
Why do my indoor photos look orange?
The orange cast comes from tungsten or incandescent bulbs, which have a color temperature around 3200K. If your white balance is set to Daylight (5500K), the camera is not compensating for the warm light and the orange shows through. Set your WB to Tungsten or use a custom WB to neutralize it.
What is the correct white balance for outdoor portraits?
For direct sun at midday, the Daylight or Sunny preset (5500K) is correct. In open shade, the Shade preset (7000-8000K) adds warmth to counteract the blue cast. On overcast days, the Cloudy preset (6000-6500K) is appropriate. Many portrait photographers add 200-500K of warmth above the baseline for a more flattering skin tone.
How do I match white balance across multiple cameras?
The most reliable method is to photograph a gray card at the start of each location or lighting condition with every camera, then sync the white balance in post using that frame as a reference. In Lightroom, you can copy white balance settings from one image and sync them across all images from the same camera at the same location.
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