Stevie911 Posted January 31, 2019 Share #1  Posted January 31, 2019 Advertisement (gone after registration) I've just been photographing in Hokkaido Japan in pure snow conditions. Despite reviewing the miniature average JPEG histogram and checking exposure setting the accuracy of the limited preview graph leaves something to be desire, since it does not realistically represent the RAW file. When reviewed in Lightroom it clearly shows the blue channel to be well to the right compared with the red and green channels, and perilously close to 255. Appreciate that the histogram is of the JPEG file but don't understand why oh why does the pro SL not have this feature as is the case on all the makes of pro camera, Nikon/Canon/Hasselblad. Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/293837-separate-colour-histogram-channel-information/?do=findComment&comment=3674923'>More sharing options...
Advertisement Posted January 31, 2019 Posted January 31, 2019 Hi Stevie911, Take a look here Separate Colour Histogram Channel Information. I'm sure you'll find what you were looking for!
frame-it Posted January 31, 2019 Share #2 Â Posted January 31, 2019 did you try RAWdigger ? Link to post Share on other sites More sharing options...
Stevie911 Posted January 31, 2019 Author Share #3 Â Posted January 31, 2019 what is RAWDIGGER? Â Link to post Share on other sites More sharing options...
frame-it Posted January 31, 2019 Share #4  Posted January 31, 2019 https://www.rawdigger.com/  Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/293837-separate-colour-histogram-channel-information/?do=findComment&comment=3674991'>More sharing options...
convexferret Posted February 1, 2019 Share #5 Â Posted February 1, 2019 Note that the Lightroom histogram is not accurate to the RAW file, it shows what's there after at least some processing has been applied. RAWDigger is indeed the tool to use to examine the RAW files directly. Link to post Share on other sites More sharing options...
Guest Posted February 1, 2019 Share #6 Â Posted February 1, 2019 Doesn't the OP mean he'd like to have an RGB histogram on the camera itself? Link to post Share on other sites More sharing options...
frame-it Posted February 1, 2019 Share #7  Posted February 1, 2019 Advertisement (gone after registration) 4 hours ago, AndyGarton said: Doesn't the OP mean he'd like to have an RGB histogram on the camera itself? yes...that's what he meant....like that's gonna happen with current camera processors🤣 Link to post Share on other sites More sharing options...
Guest Posted February 1, 2019 Share #8 Â Posted February 1, 2019 Plenty of other cameras do it. Link to post Share on other sites More sharing options...
frame-it Posted February 1, 2019 Share #9 Â Posted February 1, 2019 2 hours ago, AndyGarton said: Plenty of other cameras do it. that's good to know...which ones in the 35mm realm ? Link to post Share on other sites More sharing options...
Guest Posted February 1, 2019 Share #10 Â Posted February 1, 2019 (edited) Various Nikon D-SLRs for example. The OP quotes Canon and Hasselblad (I assume the latter not 35mm though) too. EDIT, for example: https://www.dummies.com/photography/cameras/nikon-camera/understanding-rgb-histogram-mode-on-a-nikon-dslr/ Edited February 1, 2019 by Guest Link to post Share on other sites More sharing options...
CharlesL Posted February 1, 2019 Share #11 Â Posted February 1, 2019 There are two separate issues here. One, does the camera show an R,G,B trio of histograms? Two, does the camera show histograms of raw data? Yes to the first feature on various cameras - all based on the camera JPG. (Note, you could set the camera to generate AdobeRGB JPGs and see if that helps you get more dynamic range.) On the second issue, no camera I know shows histograms of raw data. But what would these be? In your raw developer program, you will see the histograms shift as you adjust the white balance. The histogram trio of an image - which must have one or another white balance for the program to produce it - will therefore be different than a simple superposition of the raw R,G, and B independent histograms. Perhaps that is why it takes a specialized program like Rawdigger to display the latter, with various admonitions when you read the manual. Perhaps that is why Rawdigger remains a niche program and why the UniWB technique for capturing the most dynamic range remains a cumbersome method used by few photographers. Â Link to post Share on other sites More sharing options...
Jeff S Posted February 1, 2019 Share #12  Posted February 1, 2019 (edited) 37 minutes ago, CharlesL said:  On the second issue, no camera I know shows histograms of raw data.  The original Monochrom does (kicks in after first displaying the JPEG based histogram), and it’s very helpful given that blown highlights can’t be recovered in PP by saving any color channels. The next generation Monochrom (M246) lacks this feature (as does the M9, upon which the first MM was based). Jeff Edited February 1, 2019 by Jeff S Link to post Share on other sites More sharing options...
CharlesL Posted February 1, 2019 Share #13 Â Posted February 1, 2019 52 minutes ago, Jeff S said: The original Monochrom does (kicks in after first displaying the JPEG based histogram) Jeff The absence of R,G,B, hence only luminance data, is a rather different situation. Link to post Share on other sites More sharing options...
Jeff S Posted February 1, 2019 Share #14  Posted February 1, 2019 3 minutes ago, CharlesL said: The absence of R,G,B, hence only luminance data, is a rather different situation. Sure, as I noted, but you said you didn’t know of ANY camera with a RAW hustogram.  And I think it’s also noteworthy that not even the second generation Monochrom has the capability. Jeff Link to post Share on other sites More sharing options...
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