Nikon D5600 RAW NEF and DCP Tone Curve Option

(Roger) #1

I’m getting some really good color matching using a Nikon D5600 NEF RAW image alongside the D5600 camera processed JPEG images by switching on “Tone Curve” for the D5600 DCP profile!

My current process follows:

Using the Neutral Rawtherapee profile alongside the included camera automatically detected DCP profile.

Once the Color > DCP “Tone Curve” option is checked, colors brighten and match pretty good. (Funny, the option states if one isn’t available for the D5600 DCP profile, this option is not activated by default, but upon checking the option colors significantly improve.) I then activate Exposure > “Tone Mapping” (using just the default values), and colors further look at their peak desirable appearance. At this point, I then slightly adjust Exposure > Dark and Light values, along with some very slight modifications to Contrast/Saturation, and the image looks really awesome!

Basically I get an image looking almost looking exactly like the camera processed image by using the tone mapping options, then I fiddle with the previously mentioned light/dark/contrast/saturation values slightly to make the image look far better than the camera process image. Of course I forgot to mention one of the first steps I always perform, activate Detail > Noise Reduction > Luminance/“Luminance Detail”.

Any feedback on what I’ve performed here when activating Tone Curves for the DCP and Exposure menu?

(Roger) #2

If I am doing things correctly here, then I’ll continue posting this info to my own little homepage for other owners of the Nikon D5600.

So far, I pretty much seem to have the basic D5600 raw NEF editing required documented there for the beginners. (eg. adjusting image luminance detail, lens distortion adjustments if needed, …) If I’m on the ball here, admittedly by luck, then I’ll likely top-off my homepage howto with these details as well.

I should also state I’m using the Neutral profile, instead of the bundled Default RawTherapee profile. (I’ll try correcting this in my original post above.)


I always enable the DCP tone curve option, as it gives a neutral profile with more realistic contrast to the scene, less flat.

(Morgan Hardwood) #4

Using the DCP tone curve requires enabling the look table as well. The effect of the DCP tone curve can be replicated using either of the curves in the Exposure tool in “Film-like” mode.

This screenshot shows a neutral PP3 applied, then the DCP tone curve and look table were enabled:

This screenshot shows a neutral PP3 was applied, then the DCP look table was enabled, and Tone Curve 1 was used to recreate an identical look to the DCP tone curve:

DCP tone curve.pp3 (10.5 KB)
DCP tone curve.rtc (141 Bytes)

(Roger) #5

One of the items I’m trying to discern, does the Nikon D5600 DCP profile
(submitted by myself recently) include a “Tone curve” as well? If it does,
then shouldn’t the “Tone Curve” be automatically checked as the hover-over
info states, “This setting is only enabled if the selected DCP has a tone
curve.” Regardless, checking this unchecked “Tone Curve” box here using
the automatically detected RawTherapee included D5600 DCP profile (eg.
Auto-matched camera profile) upon a Neutral profile (instead of default),
applies a color curve very similar to the Nikon in camera processed color

So, is it a bug and tone curve for D5600 created images should have “Tone
Curve” checked, or is there no “Tone Curve” for the included Nikon D5600
DCP profile for RawTherapee, and RawTherapee is applying a generic Tone
Curve upon checking this box? (And the tone curve applied just so happens
to be a really good match towards the camera processed tone curve.)

(Morgan Hardwood) #6

I don’t know about your DCP.

I’ve been generating RawTherapee’s new DCPs since about 2 years, and all of them include a tone curve. That includes NIKON D5600.dcp.

That’s a false dilemma. It is neither a bug nor does the bundled DCP lack a tone curve. It is simply at the user’s discretion whether to use the DCP tone curve and look table or not.

(Luis) #7

The .dcp file for the old Canon 5D has not a tone curve. Am I wrong?

(Roger) #8

So the bug really is with the mouse hover-over information. Rewording to something like, “Your camera DCP profile may include a tone-curve (etc), enabling this option may provide better (color) tone.” instead of the misleading currently worded, “If your camera includes a tone curve, this option is automatically enabled.” (Threw me a complete curve ball thinking I should not enable the option!) And, investing $100 for the X-Rite ColorChecker Passport including my time was obviously well worth the benefits!

I also enabled CIECAM02 per the Exposure > Tone menu mouse hover-over info, although likely provides a very slight barely noticeable difference here. (Likely mainly for larger color space monitors.) I think the major option is enabling tone curve for DCP profiles here. Makes the images’ color/tone much more realistic looking. (Without the tone curve enabled, the default image color tone looked horrid or unusable in comparison to the in-camera processed image, or required too much editing.)

I’ve put together a small Nikon (D5600) & RawTherapee “how to” on my own website with this information for other raw enthusiasts. Should save lots of time, allowing newer Nikon (D5600, etc) users to focus on using other corrections such as lens correction, etc when needed. I’ve yet to augment my page with enabling CIECAM02 (Exposure > Tone) options including this recent information, more accurate info.

RawTherapee & Nikon DSLR Cameras

You can probably save yourself the reading my how to page… as the page just duplicates what I’ve already post here within the forums. And, I’ve finally started using the photos produced from RawTherapee…

(See the second image on this Wikipedia page below the first image.)7
(Short URL for Nikon Image Space:

(@#$@#$ darn cat just jumped up on the keyboard wanting snacks… OK… good to go! Oh, and the title of that cicada image, “Bokeh the Beautiful!”)

(Morgan Hardwood) #9

@Aleph You are not wrong.

@rogerx agreed that it should be re-worded.

Which “Exposure > Tone menu mouse hover-over info”, what does it say?

CIECAM02 is not about monitor gamut.

“Too much editing” is an exaggeration, as I demonstrated above. It takes just one tone curve to do the same. But I do agree that either enabling the DCP tone curve + DCP look table or doing the same via an Exposure tone curve + DCP look table does quickly make the image more pleasant. Then again, if you intend on being creative with the Exposure/L*a*b*/CIECAM02 curves, I often find that disabling the DCP tone curve helps, because then you’re dealing with an image which has only been gamma-corrected, without tonal manipulation on top of that other than your own.

(Alberto) #10


although I agree that it would be a good idea to enable the tone curve (and look table) by default, given that many people (and new users in particular) like to start from a look that is as close as feasible to the out-of-camera JPEG, I think what you write above is not quite accurate. Two things:

  1. the tooltip is correct. It says that the setting “enable tone curve” will be greyed out if the selected DCP profile doesn’t provide a tone curve. It doesn’t say that the curve is applied automatically if the DCP profile has one.

  2. “better” is highly subjective, and I don’t think it belongs in a tooltip that describes an option

(Morgan Hardwood) #11


(Roger) #12

The tool tip upon mouse hover over DCP Tone Curve & Look Table I’m seeing for rawtherapee-5.2 states, “Employ the embedded DCP tone curve. The setting is only enabled if the selected DCP has a tone curve.” The same for Look Table.

I think I now see what the mouse hover-over tooltip statement is likely trying to state, the option will be enabled (but not activated), allowing the user to activate the option per their choice.

“Employ the embedded DCP tone curve. The setting (is disabled by default and) can be activated only if the selected DCP has a tone curve.”

I tend to agree concerning “better looking”. Beauty is in the eye of the beholder.

Regardless… think Morgan already instituted a change on this. Yup, checking GIT, I can see he implemented the term, “available”. Sounds good to me!