Just for fun, I got one of these ExpoDisc things ( Amazon.com : ExpoImaging ExpoDisc 77mm Digital White Balance Filter - Neutral : Camera Lens Color Correction And Compensation Filters : Camera & Photo ) for my DSLR out of its bag. Thought I'd try it on the X4S camera for fun.
I rubber-banded it to a 1" thick stick so it would be centered in front of the lens about 1/4 inch after it was turned on and centered. Pointed the entire affair towards the sun.
Turned on the Color Waveform screen in Camera Settings as well as the Histogram.
Moving the Exposure to center the white spike off the ExpoDisc in the middle of the Histogram, in the color Waveform window I could see the Red, Green, and Blue bars alone the entire width of that window. By sliding the White Balance Slider in the Camera I could eventually overlap all three of them to a white line instead of the colors. What number below the slider is the white balance for that light source.
I got 4,900K to even mine. When I clicked it through Auto, Sunlight, Cloudy, Incandescent, Fluorescent I could see the bars separating or moving together. Auto takes a couple of seconds to zero out to a white bar.
When I turned the affair 180 degrees away from the sun, the bars meshed to white at around 6,900K.
Usually I leave it set to 5,200K and fly it.
I rubber-banded it to a 1" thick stick so it would be centered in front of the lens about 1/4 inch after it was turned on and centered. Pointed the entire affair towards the sun.
Turned on the Color Waveform screen in Camera Settings as well as the Histogram.
Moving the Exposure to center the white spike off the ExpoDisc in the middle of the Histogram, in the color Waveform window I could see the Red, Green, and Blue bars alone the entire width of that window. By sliding the White Balance Slider in the Camera I could eventually overlap all three of them to a white line instead of the colors. What number below the slider is the white balance for that light source.
I got 4,900K to even mine. When I clicked it through Auto, Sunlight, Cloudy, Incandescent, Fluorescent I could see the bars separating or moving together. Auto takes a couple of seconds to zero out to a white bar.
When I turned the affair 180 degrees away from the sun, the bars meshed to white at around 6,900K.
Usually I leave it set to 5,200K and fly it.