Digest Daily

Yellow Gums

4 years ago by | 4 Comments

Yellow Gums
Do your clinical images sometimes appear to have a yellow or blue cast? The above left image has a yellow cast to it that doesn’t accurately portray what is in the patient’s mouth. The most likely cause is an inaccurate setting for white balance – how the camera’s sensor interprets white for the image.

Depending on your camera, you may either set white balance by setting the color temperature by number or to a white balance range. Go to your camera’s menu and select white balance. If you see a series of icons (sunshine, clouds, lightning, etc.) choose sunshine. That will give you a white balance range of 5,500-6,000 kelvins.  If you have the option to select a specific temperature, set the camera to 5,200-5,500 kelvins.

Those settings will give you light interpretation that is close to natural sunlight and the blue or yellow casts should go away.

4 comments on “Yellow Gums

  1. Steve, I’ve tried a variety of WB settings and found that “Cloudy” has worked most consistently for me. Why do you prefer Sunshine? Feel free to be as techncal as you want as I do photography n the side, too. Thanks!

  2. Hey Charles,
    You are right the “cloudy” setting works on some cameras, particularly the older models of the Canon Rebel. And the cooler temperature does work on Canon cameras which in years past have shot “hot” meaning they tended to warmer temperatures. The cloudy setting would compensate for that nuance in the camera.
    Newer cameras no longer have that issue and the sunlight setting gets the color temps closer to that of natural sunlight.

    Probably the best suggestion, now that you ask, is to experiment with your individual camera and see what setting works best for you.
    S

  3. In the FGTP course we sere advised to set the white balance to “Flash”. I am shooting with a Nikon D70. Any thoughts?

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