It's a bird

by Vian Esterhuizen

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Color is the human perception of light as having different hue, from reds and oranges, through yellows and greens, to blues and violets. Color is a fundamental aspect of the arts and photography.

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Why do the thumbnails for grayscale images show up in color in Windows Explorer?

I have some images from a Nikon SLR that I have converted to grayscale, however the thumbnails in Windows Explorer are in color. Is the thumbnail information stored in the file header, or is the color ...
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99 views

Batch saving images with reduced colors

I'm trying to record and run a macro in Photoshop that saves images as PNG with just 8 colors. Recording the macro, I save for web, select the options I want, and hit save. But when I play back the ...
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1answer
50 views

Source for colored Wratten filters?

I need 13 different Wratten gelatin filters to use in some research in anatomy and I need a specific spectrum of light filters. I need #'s 3, 9, 15, 16, 21, 24, 25, 29, 44, 53, 58, 98, and 31 or 32. ...
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116 views

Per-Application Color Management under GNOME3

I have recently used DispcalGUI and a Spyder4 to calibrate my monitor. I have selected the resulting calibration profile with the GNOME setting manager. However, instead of making my workflow more ...
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0answers
234 views

Canon 6d color noise (and compared to 50d)

my first day with 6D, upgraded form 50D. Wouldn't be pixel peeping but something unusual caught my eye when I opened photos in Lightroom this morning. The color noise pattern is completely different ...
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Why does my Canon 600D (T3i) videos/pictures pick up a lot of blue?

I'm completely perplexed by why my Canon picks up a lot of blue (i.e. there is a blue hint all the time) when none of my settings seem to ask for this. At first I thought it was my really cheap lens, ...