yb98 Goldmember  2,625 posts Likes: 36 Joined Feb 2003 Location: Paris More info | Dec 05, 2010 08:32 | #1 There are several methods to represent colors. Two of them that are well known are RGB (Red, Green, Blue) and HSL (Hue, Saturation, Luminance). Best DPP Threads
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Player9 Senior Member 658 posts Joined Mar 2007 More info | Dec 05, 2010 08:45 | #2 Paint Shop Pro allows you to see the hue histogram or the saturation histogram totally separate from the typical RGB or luminance histograms. RP, 60D, RF 24-105mm f/4-7.1 IS, RF 35mm f/1.8 IS, RF 50mm f/1.8, EF-S 10-22mm f/3.5-4.5, EF-S 18-135mm 3.5-5.6 IS, EF-S 55-250mm f/4-5.6 IS, Tamron 17-50mm f/2.8, EF 28mm f/1.8, EF 50mm f/1.8, EF-S 60mm f/2.8 macro, EF 85mm f/1.8, El-100, 430ex, 220ex, Alien Bee B400 (2), Alien Bee B800 (2)
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Dec 05, 2010 09:12 | #3 Interesting... Do you use it ? if yes for what purpose ? Best DPP Threads
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Player9 Senior Member 658 posts Joined Mar 2007 More info | Dec 05, 2010 09:25 | #4 I don't use it. I only use the basic RGB histograms. And I usually use Photoshop Elements for PP. I own Paint Shop Pro x2 and x3, but the programs are just too sluggish for me and Elements (while having fewer features) produces better results imo. I'm also interested in learning about why there is a need for hue or saturation histograms. RP, 60D, RF 24-105mm f/4-7.1 IS, RF 35mm f/1.8 IS, RF 50mm f/1.8, EF-S 10-22mm f/3.5-4.5, EF-S 18-135mm 3.5-5.6 IS, EF-S 55-250mm f/4-5.6 IS, Tamron 17-50mm f/2.8, EF 28mm f/1.8, EF 50mm f/1.8, EF-S 60mm f/2.8 macro, EF 85mm f/1.8, El-100, 430ex, 220ex, Alien Bee B400 (2), Alien Bee B800 (2)
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tonylong ...winded  More info | Dec 05, 2010 14:19 | #5 yb98 wrote in post #11398330  There are several methods to represent colors. Two of them that are well known are RGB (Red, Green, Blue) and HSL (Hue, Saturation, Luminance). Usually, post-processing softwares offers a view on the RGB histogram and Luminance histogram. However I have never seen a Hue histogram or a Saturation histogram. So I'm wondedring why ? Aren't these histograms useful ? Does anyone have any thought about this ? I haven't ever thought about some separate histogram for those things. In thinking about it I guess that those things are represented fairly well in the RGB histogram -- we can see the values shifted when we play with the different controls, we can mess with the color channels, and all that does show in the RGB histogram, so I don't even know how something woud show up "different" in a hue or a saturation histogram -- Hue affects color balance so would affect R, G and B, global saturation would affect them all, individual adjustments shows up in the RGB histogram. Tony
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