Levels adjustment

What do you mean with a “levels like tool”?
A combination of exposure and black and whitepoint?

I want to be able to change the expose and contrast at the same time with one control. I want to be able to put a specific peak, for instance a white shirt around 240 without having to adjust exposure and contrast and exposure and contrast to get the shirt at 240 and the blacks still black.

With a levels tool this is a piece of cake.
This is how I always adjusted all my pics first. Then the other stuff like highlights shadows to tweak specific tones come after that initial equalization.

If contrast is increasing you can do this with tone curves. If contrast needs to decrease or any of the scene is overexposed you are stuck with the balancing of exposure and contrast sliders.

Ah ok, so if dxo makes a checkbox to connect advanged contrast sliders with the selectivetone sliders so they move as one this would make you happy?

Dxo has with the selective tone sliders one thing.
The overlap is a bit big. It’s feadering alot inside the controlled zone of the next slider.
Which is a good thing for smoothnes of the transision but a pain if you are targetting a certain exposurelevel. Those levels i use controlpoints for. (which selects lumination and color.)

What DxO would benefit from are a distinct difference between sharpening microcontrast slider like clearview plus and a DeHaze kind of blacklevelslider.
Nonsharpeningcontrast. Finecontrast in combination with blacks does a bit this function or a small pull in tonecurves blacklevel.

I would like a smart exposure tool in smartlightingtoolset which has two eyedroppers.
Whitelevel and a blacklevel. NOT the same as the use of boxes.
Then i can set white point and drag darkshadow to black
Give those eyedroppers a 0-10% adjustable in preference drawback from edge 0 and 255. So i can do a two click exposure ánd DR setting.

The smart exposure idea with two eye droppers is another idea. You could use those eyes toppers to set the white point and black point on that levels tool.

The key point here is to be able to change the contrast and exposure by adjusting the white point OR the black point. Today, any adjustment to the exposure slider changes the white point and the black point at the same time. Any changes to contrast slider also changes the white point and the black point at the same time. A true levels tool would be a great alternative.

With ‘‘Levels’’ do you mean this new tool should look similar as Levels in Capture One?


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C1’s levels tool offers great possibilities and is easily the implementation I like best.
Make the size of the pickup tool variable and DxO would get another of my votes.

We should add a feature request for this!

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I don’t have Photoshop but the video showes me what I’ve thought. Not in detail off course. I’m happy with curves in general. The tool could use some more development in PL.


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thanks for the video – saves me to explain …

The most I’m missing in DPL’s Tone curve is the hand tool and an ‘integrated’ histogram – even the simplified version of LR5 has them.


@StevenL – maybe to take note

This video shows which curvetool we would like to have in DxOPL.
Those selectiontoolset is the cherry on the cake.

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C1 Levels tool is fantastic. And yes, you can recover highlights above 255 with the C1 levels tool. DXO really would benefit from a tool like this.

Vote for it here:

There doesn’t exist anything above 255 in a 8-bit division. You must have missed something.


@MikeR, you seem to be thinking/writing about ooc jpeg vs. raw images. Yes, a jpeg can have blown highlights, while the raw image has none.

Blown highlights in a jpeg can not be recovered, but they can be replaced by something that is not white.

Blown highlights in raw image data cannot be recovered either. The only possibility to “recover” something is to replace the process that clipped available data by something that does not. In our environment here, it’s replacing ooc jpegs by images created by customising of raws in DPL.

May I add something to this.

You may do this, but the result will be different. Pixel values are corrected with a gamma correction in the conversion. What you think will have a space of 1 stop in RAW will have just a little in RGB. You might see the effect in the histogram when playing with the gamma correction, or the exposure correction. The gamma correction of 1 in PL is based on the initial RGB image, so after the one done in the conversion. And 1 does mean no correction.


I give up…
I can recover raw highlights in capture one with the levels tool. This is a fact. I can’t recover raw highlights with the adjustments on the tone curve tool in DXO. This is also a fact.

I would like a levels tool that works like capture one.

Can you share a link to a RAW file, the highlights of which that you can’t recover in PL4 but that you can recover in C1?

Thanks. I understand your request for a Levels tool in PL and think it is a good one. I would just like to try it out myself with Curves only. If I am unable to recover the highlights using Curves only, I will support your proposal :smiley:

I’ll PM a file to you… And I’ll try to illustrate the issue. Standby…

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First image is the Raw image with ALL adjustments removed. Substantially overexposed but highlights are present in the ARW.

Second image is the file with exposure and contrast backed down. This isn’t how I would finish this edit, but is illustrative of the issue. ONLY exposure and contrast were modified. No other corrections enabled.

Third image is the file with approximately the same adjustment via the tone curve. Of course, all of the highlights present in the ARW file are NOT recovered, and the blown whites (at 255) have all been reduced to 172,172,172 in this instance. You can see the hair in the closest dancer is the same exposure between the two adjusted images. But the highlights are still gone and have become grey.


Exposure/Contrast Adjustment:

Tone Curve Adjustment:

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Just curves, with clipping.

And without clipping

There’s no raw data available in a jpg.