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Camera Raw rendering vs Photoshop

Forum|Forum|9 years ago
February 16, 2017
3 replies
3644 views

Hello,

My blacks in Camera Raw are crushed, while in photoshop not.

If i open a raw in Camera Raw, and open it in Photoshop without changing settings , the blacks in Camera Raw were crushed, and in photoshop, it's normal.

When i look the raw in bridge, blacks are fines too.

Why my camera raw crushes the black ? (and some red tones too in the strong shadows) ?

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Correct answer D Fosse

my calibration is sRGB gamma 2.2 D65 v2 matrice in i1Profiler on windows 10

my calibration is sRGB gamma 2.2 D65 v2 gamma curve in colornavigator

the problem still occurs

OK, then uncheck GPU from both apps' preferences and try again.

As long as the conversion from source/document profile into a valid monitor profile is correctly executed, there cannot be a difference between them. They should both display, simply, correctly.

So that conversion isn't performed correctly. With the GPU enabled, the conversion is done by the video driver. Off, it's done by the CPU. The latter is the traditional way, and is usually more reliable.

A potential source for errors here is that the source profile in ACR is linear TRC ProPhoto, in Photoshop it's sRGB/Adobe RGB/1.8 ProPhoto. So while they should both end up identically in monitor color space, the fact is that we have two different conversions, two different calculations. A problem may show up in only one of them.

B

benj_vAuthor

Known Participant

Hello,

I finally found the problem :

While putting rendering intent to "relative" (default option in ps color settings ?), i get strange lights, and red in the shadows while opening some raw (raw adobe98, PS srgb), and with "perceptual" rendering intent option, all si finally fine !

normal lights, normal colors.

I tried a lot of calibrations with different mode etc... Always the same, all the calibration (v4.2, v2.2, gamma, lut, curve etc) works fine with "perceptual" in PS. But are wrong with "relative".

Stephen Marsh

Community Expert

While putting rendering intent to "relative" (default option in ps color settings ?), i get strange lights, and red in the shadows while opening some raw (raw adobe98, PS srgb), and with "perceptual" rendering intent option, all si finally fine !
normal lights, normal colors.

Do you have “black point compensation” (BPC) turned on when using relative colorimetric intent?

magic carpet

Participating Frequently

There were two screenshots – with different black behaviour, one ACR and the other Photoshop. As perceptual pretty much maps the same way in blacks as BPC on I was just checking if this could be part of the issue.

I don't use ACR often, but I had to check this out.

Surprisingly I had the same/similar bug using ACR.

In my case actually the whole color was displayed differently in ACR vs. opened in Photoshop after processing the raw to a smart object.

Re-opening the raw in ACR and changing form the "full screen mode" to the "not full screen mode", closing ACR and re-opening the raw in ACR (in stays in "non full screen mode") fixed it for me. Colors are now the same in ACR and PS, just how it should be, no matter what gpu settings you use ore if you use perceptive or relative mode.

Very strange thing.

However, this thread caught my attention because I currently have the very same problem with Hasselblad Phocus (latest version 3.1.5):

Blacks are displayed much deeper in Phocus as they are displayed in PS, where the rendering of the black is correct. It always stays like this no matter what I do. It even stays like this, if I use ONLY a MBP as single display. I know that we are on an adobe forum - but is anybody else experiencing this issue that blacks are deeper in Phocus then they are in PS (latest version 3.1.5) ?

system info:

El Capitan 10.11.6, PS CC 2017.1

MBP2014 hooked to a CG277 (calibrated using latest version of color navigator)

D Fosse

Community Expert

Oh, one more thing - is this a dual display setup? In that case make sure that the right profile is really used for each display. ACR is known to occasionally use the wrong profile (for as of yet unknown reasons).

JJMack

Community Expert

I have trouble understanding what your mean. Where do you see the colors different. Photoshop can not process RAW files it uses the ACR Plug-in to convert the RAW data into and RGB image that can be opened as a smart object layer or a raster layer.

JJMack

B

benj_vAuthor

Known Participant

1) I open photoshop

2) I open a raw (and it launch Camera Raw so)

3) I can see the blacks crushed in camera raw. I open my I do "open" / "open as smart object"

4) In Photoshop, Black are normal, not clipped

5) I open the Raw in Bridge

6) I press space-barre to load the image in full screen (the raw loads to it's full quality), and black are normal not clipped.

7) I right click (still in Bridge) and "open in camera raw"?

8) black are clipped in Camera Raw

So, if i open a raw in Camera Raw, from Bridge, or from Photoshop, blacks are clipped.

JJMack

Community Expert

There does seem to be a differences in color on my machine too. The colors in ACR seems more vivid or saturated. But then I'm bit colorblind my displays are not the best and only calibrated via test web images use for calibration. I'm not too obsessed with color as others and can always adjust colors to my liking. In my mind many are too obsessed with colors and calibration I rather concentrate on printing image I like.

JJMack

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