A rose by any other name...oversaturated in 60D!

I've come up with this problem before, I have the time to look into it now.

My 60D in almost any other natural situation gets pretty good results with AWB.

However, if the scene is shot in bright daylight and is dominated by vibrant reds, the red channel gets blown!

I can correct this in Darktable (similar to LR) but I wonder what does it take to get the results right SOOC. Given the fact that just about everything else in natural light is well balanced.

Case in point:

SOOC, from RAW, standard sharpening.

No, the sensor managed to capture the colors entirely. If it didn't, your desaturating couldn't have brought the detail out.

IMO, it's a simple case of the rose's red being out of the display's gamut until desaturated.

agedbriar wrote in post #15903559
No, the sensor managed to capture the colors entirely. If it didn't, your desaturating couldn't have brought the detail out.

IMO, it's a simple case of the rose's red being out of the display's gamut until desaturated.

exactly.

So, it's a monitor issue! Thanks!

I have a generic Dell monitor, will it improve if I buy calibration equipment (Color Munkie) or do I need to spend big $$ for a monitor?

I believe that even the very best of monitors cannot reproduce all the most saturated colors that sensors are able to capture.

Calibration provides color accuracy within the monitor's gamut, but doesn't enlarge the gamut itself.

agedbriar wrote in post #15903615
I believe that even the very best of monitors cannot reproduce all the most saturated colors that sensor are able to capture.

again, exactly!

and the real world has even more colors.

luckily due to the eye and brain's perception, it's mostly all relative to the other colors hitting the eye's cones at the same time.

MakisM1 wrote in post #15903592
So, it's a monitor issue! Thanks!

I have a generic Dell monitor, will it improve if I buy calibration equipment (Color Munkie) or do I need to spend big $$ for a monitor?

that will help for your personal viewing, but not for the rest of the world's viewing pleasure.

color gamut limitations just go with the territory. a monitor's color gamut is larger than a printer's gamut.

when i have hours and hours to dork out, cambridgeincolour.com is one of my favorite websites.

a quick search found these two pages.

http://www.cambridgein​colour.com/tutorials/c​olor-spaces.htm

http://www.cambridgein​colour.com …olor-space-conversion.htm

cheers!

Thank you very much guys!

Would underexposing by a stop helped the rose. Or would you recommend using polariser filter.

I 'underexposed' in Darktable. By the time the red channel touches the limits of the histogram, the rest of the channels (picture...) are worthless...

Here is a view of the uncorrected photo...look at the red channel (upper right corner)

Ive always found that using the camera Standard profile can quite often blow out the red channel.
You can reduce the saturation in the picture style or use a different one for SOOC images.

Dave, thank you for the suggestion. It is certainly true for SOOC jpegs (and I use a modified standard profile with the saturation notched down one click from the middle (also the skin tones)...)

However, for RAW this doesn't matter.

The problem is what Agedbriar and He's gone have suggested. The input color profile is 'enhanced color matrix' which is more than the monitor can do. If I change this for sRGB (as an input) I get a very dark RAW rendition but then the red channel is ok.

I concluded that the best processing is to carefully de-saturate the red and change the tint enough to maintain the vibrance...

I agree, for raw it doesn't matter, unless you use the Camera standard profile in your raw converter as well.
Ive never heard of Darktable before, im assuming it doesn't use these profiles in the same way DPP and LR/ACR do.
I do tend to lower the reds as well though, and in LR you can soft proof to sRGB which helps to get it just right.

Darktable is the LR for Linux.

It doesn't use any profiles, the only standard is a mild sharpening, which I turn off as I start PP (then apply lens corrections, CA correction and then I go to image specific actions.

canon DSLRs blow the red channel. I just live with it.

ed rader wrote in post #15906620
canon DSLRs blow the red channel. I just live with it.

I get this sometimes as well.