Questions tagged “luminance”

Ask the Unique Photo creator community — gear, technique, post-processing and more.

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What does the Y value mean in sRGB, and how can black, gray, and white share the same chromaticity?

srgbcolor-managementcolor-spacedisplayluminance

Photography Stack Exchange contributor

4y ago

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274

Why can cyan look brighter than red on an RGB monitor?

hsldisplaycolorluminancergb

user91535

6y ago

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286

How does the Y component in CIE XYZ relate to physical luminance?

calibrationcolorimetrycie-xyzcolor-spaceluminance

Photography Stack Exchange contributor

6y ago

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493

How does luminance (Y) relate to the CIE 1931 chromaticity diagram and gamut limits?

colorimetrychromaticitycie-1931gamutluminance

Photography Stack Exchange contributor

6y ago

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274

Why does the Y channel in YCbCr represent image brightness?

lumavideoycbcrcolor-spacesluminance

Photography Stack Exchange contributor

7y ago

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124

What does the gamma histogram represent compared with the regular brightness/RGB histogram?

canon-dpphistogramgammaeditingluminance

Photography Stack Exchange contributor

7y ago

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212

Can a USB camera be used as a lux meter, and why do bright readings go wrong?

usb-cameralight-meteringluxluminanceexposure

Photography Stack Exchange contributor

8y ago

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195

What display luminance should I use when calibrating for images mainly viewed on screens?

display-calibrationmonitor-calibrationcolor-managementx-riteluminance

Photography Stack Exchange contributor

9y ago

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253

What’s the difference between luminance and brightness?

color-managementbrightnessterminologyluminanceexposure

Photography Stack Exchange contributor

12y ago

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303

What is brightness, and how is it measured in photography?

brightnessdigital-imagingcolorluminanceexposure

Photography Stack Exchange contributor

12y ago

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240

Why do the RGB and luminance histograms sometimes look similar?

histogramcolorluminancergbexposure

Photography Stack Exchange contributor

13y ago