Red and Blue

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Questions about how to choose the correct colour balance for a given scene, and how it affects photos.

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2
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1answer
102 views

How would IR-assisted white balancing work?

One of the Samsung Galaxy S6's new camera feature is to use its IR-based heart-rate sensor to aid in white balancing. Some of the write-ups on tech websites briefly mention how the IR sensor can ...
2
votes
1answer
175 views

How to programmatically determine as-shot ColorTemp from NEF (RAW) file?

When shooting RAW images in AUTO WhiteBalance mode, the camera will somehow determine what it thinks is a good WB for the picture. In Photoshop (CS6), there is no way I can find to extract the ...
1
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0answers
46 views

What effect does Gary Fong's collapsible LightSphere have on color temperature?

I intend to use a Gary Fong collapsible LightSphere, the one with white-transparent body and the warmer yellow semi-sphere for shooting portraits on locations and studio. How can I know the real ...
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0answers
75 views

How can I control the white balance from an Android application?

I am currently working on an Android Application that does Day-to-Night/Night-to-Day Time-lapse using Bulb Ramping, and I think I am 80% there. What the application does is that it takes photos in ...
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0answers
323 views

How do I measure the correlated color temperature of a light source with a DSLR without a gray card?

By curiosity, I tried to measure the correlated color temperature of different light sources in my house by taking a photo of a white object (a piece of paper) lit by a single source at a time. The ...