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In the Basic Guide to Color Calibration using a CMS (updated and enhanced) it suggests setting Color using White and Red.


When using the filter one uses blue. Why are we supposed to use Red when setting color using a meter instead of blue? The guide says to set Red to 21% of the luminance of white. What would the target be if one was to use blue?


When I set color with my meter using white and red I get a significantly different setting than when using the blue filter. Maybe my meter is bad. I currently have a Spyder 3 and I suspect it isn't reading Red correctly. I have a i1 coming tomorrow.
 

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In the Basic Guide to Color Calibration using a CMS (updated and enhanced) it suggests setting Color using White and Red.


When using the filter one uses blue. Why are we supposed to use Red when setting color using a meter instead of blue? The guide says to set Red to 21% of the luminance of white. What would the target be if one was to use blue?


When I set color with my meter using white and red I get a significantly different setting than when using the blue filter. Maybe my meter is bad. I currently have a Spyder 3 and I suspect it isn't reading Red correctly. I have a i1 coming tomorrow.[/QUOTE


Rec 709


White = 1

Red = .212

Green = .715 (where most of contrast comes from)

Blue = .151
 

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Quote:
Originally Posted by MountainMan10 /forum/post/18226977


In the Basic Guide to Color Calibration using a CMS (updated and enhanced) it suggests setting Color using White and Red.


When using the filter one uses blue. Why are we supposed to use Red when setting color using a meter instead of blue? The guide says to set Red to 21% of the luminance of white. What would the target be if one was to use blue?

The filter/SMPTE color bar method is unreliable. It is 7.2% for Rec. 709 blue and 8.7% for SMPTE-C blue. You can use any of the colors. I suggest red because the eye is especially sensitive to errors in red--much more so than with blue.
 

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I prefer to take it one step further and get the Y targets optimized for my display's measured primaries (xy). A very user-friendly calculator for this is found here .
 
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