1 ACES 1.0.1 OpenColorIO configuration
4 Informations about ACES
7 The **ACES** project home page is here:
9 - http://www.oscars.org/aces
11 The latest documentation on the ACES transforms and specifications can be found here:
13 - http://www.oscars.org/science-technology/aces/aces-documentation
19 Colorspaces in this configurations are grouped into the following families: ACES, ADX, Look, Output, Input, Utility, Aliases. Descriptions for the colorspaces in the different families are provided below.
21 For ease of use across a broader number of applications, the family name of each colorspace is pre-prended to the colorspace name when the configuration is authored. Those prefixes will be omitted in this document, but will show up when the configuration is loaded and used.
35 Colorspaces and transforms representing the core ACES working and interchange colorspaces.
37 ##### Technical information
39 Transforms generated based on the [ACES CTL Transforms](https://github.com/ampas/aces-dev/tree/v1.0/transforms/ctl)
50 Colorspaces and transforms representing the ACES ADX spaces used for film scanning and printing.
52 ##### Technical information
54 - Transforms generated based on the [ACES CTL Transforms](https://github.com/ampas/aces-dev/tree/v1.0/transforms/ctl)
55 - [Alex Fry's ACES 0.7.1 OCIO config](https://github.com/imageworks/OpenColorIO-Configs/tree/master/aces_0.7.1) was also a valuable resource.
61 - ACES 1.0 to 0.1 emulation
62 - ACES 1.0 to 0.2 emulation
63 - ACES 1.0 to 0.7 emulation
67 Colorspaces and transforms emulating the look of the ACES 0.1, 0.2 and 0.7 release.
69 - Should be applied to data in the ACES2065-1 colorspace.
70 - Should be used before an ACES Output Transform.
72 ##### Technical information
74 Transforms generated based on the [ACES CTL Transforms](https://github.com/ampas/aces-dev/tree/v1.0/transforms/ctl)
84 - Rec.2020 ST2048 (1000 nits)
85 - DCDM (P3 gamut clip)
87 - P3-D60 ST2048 (1000 nits)
88 - P3-D60 ST2048 (2000 nits)
89 - P3-D60 ST2048 (4000 nits)
95 Colorspaces and transforms implementing the ACES Output Transforms. These colorspaces produce code values ready for display on hardware devices calibrated to the standard used to name the colorspace.
97 ##### Technical information
98 - Transforms generated based on the [ACES CTL Transforms](https://github.com/ampas/aces-dev/tree/v1.0/transforms/ctl)
99 - All transforms produce full-range output. Host applications should be used to apply an full-to-legal scaling needed.
105 There are a variety of Input Transforms covering different cameras manufacturers, gamuts, transfer functions and camera settings. See below for specifics.
109 Colorspaces and transforms that implement the ACES Input Transforms. These colorspaces are used to convert from camera-specific formats and encodings to ACES.
111 ##### Technical information
113 References and descriptions are provided for each group of Input Transforms below.
114 - The colorspaces whose names include a transfer function and a gamut name are full implementations of ACES Input Transforms.
115 - Ex. The ARRI 'V3 LogC (EI160) - Wide Gamut' colorspace
116 - Ex. The RED 'REDlogFilm - DRAGONcolor2' colorspace
117 - Ex. The Canon 'Canon-Log - DCI-P3 Daylight' colorspace
118 - The colorspaces that start with 'Linear - ' will convert to or from a specific gamut but not apply a transfer function.
119 - The colorspaces that start with 'Curve - ' will apply a transfer function but not convert between gamuts.
122 - [ARRI Input Transforms](https://github.com/ampas/aces-dev/tree/v1.0/transforms/ctl/idt/vendorSupplied/arri/alexa)
123 - Conversations with Joseph Goldstone of ARRI
126 - [Canon ACES landing page](http://usa.canon.com/cusa/professional/standard_display/aces)
127 - [Clog white paper](http://learn.usa.canon.com/app/pdfs/white_papers/White_Paper_Clog_optoelectronic.pdf)
128 - [C500 Drivers and Software](http://www.usa.canon.com/cusa/professional/products/professional_cameras/cinema_eos_cameras/eos_c500#DriversAndSoftware)
129 - [C300 Drivers and Software](http://www.usa.canon.com/cusa/professional/products/professional_cameras/cinema_eos_cameras/eos_c300#DriversAndSoftware)
130 - Choose *OSX Mountain Lion v10.8* to download the IDTs
131 - [C100 Drivers and Software](http://www.usa.canon.com/cusa/professional/products/professional_cameras/cinema_eos_cameras/eos_c100#DriversAndSoftware)
132 - Choose *OSX Mountain Lion v10.8* to download the IDTs
135 - [Vlog/V-Gamut white paper](http://pro-av.panasonic.net/en/varicam/common/pdf/VARICAM_V-Log_V-Gamut.pdf)
136 - [Varicam Drivers and Software](http://pro-av.panasonic.net/en/varicam/35/dl.html)
139 - [Understanding REDlogFilm and REDgamma](http://www.red.com/learn/red-101/redlogfilm-redgamma)
140 - Conversations with Graeme Nattress of RED
143 - [Sony Input Transforms](https://github.com/ampas/aces-dev/tree/v1.0/transforms/ctl/idt/vendorSupplied/sony)
145 #### GoPro Experimental
146 - The quality and consistency of these transforms has not been verified.
147 - Conversations with David Newman of GoPro
154 A collection of colorspaces that are used to facilitate the creation of LUTs and other basic functionality.
156 ##### Technical information
158 - The 'Log2 xx nits Shaper' and 'Dolby PQ xx nits Shaper' spaces cover the linear range centered around 18% grey. The 48 nits spaces cover -6.5 stops (0.0028125) to +6.5 stops(16.291740). The 1000 nits spaces cover -12 stops to +10 stops. The 2000 nits spaces cover -12 stops to +11 stops. The 4000 nits spaces cover -12 stops to +12 stops.
159 - The LMT shaper spaces cover the linear range going from 10 stops below 18% grey (0.00017578125) to 6.5 stops above 18% grey (16.291740)
160 - The colorspaces starting with 'Linear - ' will convert to or from a specific gamut but not apply a transfer function.
161 - The colorspaces starting with 'Curve - ' will apply a transfer function but not convert between gamuts.
167 The role colorspaces are aliases to the colorspaces used for the *OCIO* 'roles' functionality.
173 The alias colorspaces are named with all lower-case letters and no spaces, dashes, parentheses or other characters that would not work well in a filename. They are only references, aliases for the base colorspaces with more user-friendly names. These spaces were added to enable OCIO's token-based colorspace / filename matching.
175 - These colorspaces should not generally be used by most artists.
181 The standard *OCIO* roles are defined. They role assignments are:
183 - **color_picking**: Output - Rec.709
184 - **color_timing**: ACEScc
185 - **compositing_log**: ACEScc
187 - **default**: ACES2065-1
188 - **matte_paint**: ACEScc
190 - **scene_linear**: ACEScg
191 - **texture_paint**: Raw
193 Additionally, a number of colorspaces that are gaining wider adoption have been added to the config. Their names and assignment are:
195 - **compositing_linear**: ACEScg
196 - **rendering**: ACEScg
202 The default config has one Display named **ACES**, which contains the following Views / colorspaces:
204 - sRGB D60 sim., colorspace: sRGB (D60 sim.)
205 - DCDM, colorspace: DCDM
206 - DCDM P3 gamut clip, colorspace: DCDM (P3 gamut clip)
207 - P3-D60, colorspace: P3-D60
208 - P3-D60 PQ 1000 nits, colorspace: P3-D60 PQ (1000 nits)
209 - P3-D60 PQ 2000 nits, colorspace: P3-D60 PQ (2000 nits)
210 - P3-D60 PQ 4000 nits, colorspace: P3-D60 PQ (4000 nits)
211 - P3-DCI, colorspace: P3-DCI
212 - Rec.2020, colorspace: Rec.2020
213 - Rec.2020 ST2048 1000 nits, colorspace: Rec.2020 ST2048 (1000 nits)
214 - Rec.709, colorspace: Rec.709
215 - Rec.709 D60 sim., colorspace: Rec.709 (D60 sim.)
216 - Raw, colorspace: Raw
217 - Log, colorspace: ACEScc
219 Considerations for custom config generation:
221 - The choice of a single Display and many Views may not align well with the implementation of OCIO in an application.
222 - If you would like to generate a config that contains multiple Displays, with a small number of Views for each, review the config generation script's '--createMultipleDisplays' option.
223 - If a Look is added to the config, a new set of Views will be added, one for each of the Views listed above except Raw and Log, that includes the Look. The Views with Looks will be interleaved in the View list with the original Views.
224 - To add a custom Look to the config, review the config generation script's '--addACESLookLUT', '--addACESLookCDL', '--addCustomLookLUT' and '--addCustomLookCDL' optoins.
230 The default resolution is 64x64x64 for the 3D LUTs and 4096 for the 1D LUTs.
233 The LUTs used internally by OCIO can be can be retrieved [from the repository here.](https://github.com/hpd/OpenColorIO-Configs/tree/master/aces_1.0.1/luts)
236 LUTs that can be used outside of OCIO are included in the ['baked' directory here.](https://github.com/hpd/OpenColorIO-Configs/tree/master/aces_1.0.1/baked)
238 - The LUTs encode the ACES Output Transform for a specific colorspace input and are generally named:
239 - 'Ouput Transform name' for 'Input colorspace name'.extension
240 - Ex. 'sRGB (D60 sim.) for ACEScc.icc'
242 The LUTs included in the 'baked' directory cover the following formats and applications:
244 - .3dl for Autodesk Flame
245 - .3dl for Autodesk Lustre
246 - .lut for SideFX Houdini
247 - .csp for Autodesk Maya
248 - .icc for Adobe Photoshop
251 Generating Configurations
255 Configurations can be generated by the following *Python* package: [aces_1.0.1/python](https://github.com/hpd/OpenColorIO-Configs/tree/master/aces_1.0.1/python)
257 Usage is described on the command line and in the package root [\_\_init__.py](https://github.com/hpd/OpenColorIO-Configs/blob/master/aces_1.0.1/python/aces_ocio/__init__.py) file.
259 Features exposed for customization by the user include:
261 - The resolution of 1D and 3D LUTs
262 - Inclusion of custom Looks
263 - Two modes of creating the list of OCIO Displays and Views
264 - Selection of shaper function: Log2 or Dolby PQ
267 The configuration depends on the **ACES 1.0.1 + Hotfixes CTL**. The release contains a number of minor bug fixes and small additions in the utilities folder but is otherwise the same as the master **ACES 1.0.1** release.
269 The CTL is available here:
271 - https://github.com/ampas/aces-dev/tree/hotfixes/transforms/ctl
273 Clone this repo using the following command:
275 - git clone --branch hotfixes https://github.com/ampas/aces-dev.git
280 The *Python* configuration generation package depends on the following
283 - **OpenImageIO**: http://openimageio.org
284 - Detailed build instructions can be found here: [OpenImageIO Build Instructions](https://sites.google.com/site/openimageio/checking-out-and-building-openimageio)
285 - **OpenColorIO**: http://opencolorio.org
286 - Detailed build instructions can be found here: [OpenColorIO Build Instructions](http://opencolorio.org/installation.html)
287 - **CTL**: https://github.com/ampas/CTL
292 Use the following commands to build these packages on Mac OSX
295 - brew install -vd opencolorio --with-python
296 - Update the homebrew repository of install scripts to make sure that OpenImageIO is included.
297 - brew tap homebrew/science
298 - Optional Dependencies for OpenImageIO
299 - brew install -vd libRaw
300 - brew install -vd OpenCV
302 - brew install -vd openimageio --with-python
304 - brew install -vd CTL
305 - OpenColorIO, a second time. *ociolutimage* will build with *openimageio* installed.
306 - brew uninstall -vd opencolorio
307 - brew install -vd opencolorio --with-python
311 The script used to generate these transforms and the transforms themselves were the product of work and conversations with a number of people. Thanks go to:
335 The original author of this OCIO config is:
337 - Haarm-Pieter Duiker