FUJIFILM film simulation LUT in ART

[age]

FUJIFILM has released some of its film simulation color modes available as LUT files.

Film Simulation LUTs for Fujifilm GFX | FUJIFILM X Series & GFX - Global

https://www.dpreview.com/news/1984031538/fujifilm-film-simulations-luts-eterna-55

The luts should be used in the Fuji logarithmic color spaces and with a CTL script is possible to use they in ART.

lin_to_flog2.zip (1.4 KB)

The script does the following things:

• convert the linear space to F-LOG2
• Has exposure, brightness and contrast sliders, exposure is set by default at 0.98
  
  

The usage is very simply, the working profile must be rec2020, load the CTL script and load the lut

I don’t have a fuji camera so I’ve made a comparison with the Aaron_b’s luts beacuse they are great.

Fujifilm film simulation profiles for adobe and other raw processors

I recently completed a new version of my set of camera profiles and luts for replicating fuji film simulations with non fuji cameras. Repo on github: FujifilmCameraProfiles Included are data to make a dcp profile for any camera and a cube lut The project is mostly geared toward adobe camera raw and lightroom but I thought some users of this forum would also be interested. If people are interested, I may add a format compatible with more raw processors.

FUJIFILM Official lut for classic chrome

Aaron_b lut

FUJIFILM Official lut for reala ace

Aaron_b lut

ART doesn’t support .cube files the luts should be converted to haldclut
haldclut art.zip (129.2 MB)

The film simulation are :

• Acros
• Astia
• Classic Chrome
• Classic Neg.
• Eterna Bleach Bypass
• Pro. Neg.
• Provia
• Reala Ace
• Velvia

It’s possible to use these luts inside Darktable too

Is there a method to apply Fujifilm color profiles for GFX sensors?

You can buy a color checker, and use darktable-chart to make your own. I’ve experimented with various methods, and found the simple 24-patch lookup and tone curve produced by darktable-chart more robust than bigger LUTs. You can find my X-T5-derived styles here: Darktable-Film-Simulation-Panel/styles at master · bastibe/Darktable-Film-Simulation-Panel · GitHub (I’m actually not sure if these are current. They may be an older version)

[age]

Some presets that match sigmoid with contrast=1.5

sigmoid
exposure=+0.95, contrast=1.5

ASTIA
exposure=0.75
brightness=1.11
contrast=0.95

CLASSIC CHROME
exposure=0.75
brightness=1.14
contrast=0.90
global saturation=+20

PRO NEG STD
exposure=0.75
brightness=1.14
contrast=1.12
saturation=+10

PROVIA
exposure=0.75
brightness=1.14
contrast=1.10

REALA ACE
exposure=0.75
brightness=1.14
contrast=1.12

The exposure, brightness and contrast parameters are in the lintolog CTL

[yasuo (Ohnishi, Yasuo)]

Very impressive.
How did you convert cube format LUTs to Hald CLUT? Using G’mic or ImageMagick?

[Rubens (Rubens Stuginski Jr)]

Hi,
I successfully converted a cube file to CLUT using gmic.
The command I used was:

gmic file_in.cube r 64,64,64,3,3 r 512,512,1,3,-1 o file_out.png

[yasuo (Ohnishi, Yasuo)]

Thank you very much.

By the way, in ART, we can use OCIO clf format LUT. So I used ociomakeclf to convert Fuji’s cube format LUTs to clf. Here is the results comparison of embeded Jpeg in RAW, your Hald CLUT and clf, using PROVIA LUT. Exposure compensation adjustment is needed for clf.

[age]

@yasuo

Here is the results comparison of embeded Jpeg in RAW

Was some kind of shadow/highlights recovery active in the camera processing?

[yasuo (Ohnishi, Yasuo)]

Hi,
I used default setting of ART except your ctl script exposure adjustment.