Color

The Color tool covers everything color-related: OpenColorIO settings, LUTs (look-up tables), and image adjustments such as brightness, contrast, levels, and exposure.

Locations: Tools menu, Tools toolbar

Shortcut: F4

The tool is divided into collapsible sections — OCIO, LUT, Color, Levels, Exposure, and Soft Clip — and each can be turned on or off independently using the checkbox in its header. This makes it easy to compare the image with and without a given adjustment.

When any of the color controls are active, a status bar indicator is shown so the adjustment isn’t forgotten about.

OpenColorIO (OCIO)

The OpenColorIO configuration can be set to a built-in configuration, the OCIO environment variable, or a specific file path.

Shortcuts:

• Toggle OCIO enabled: Ctrl+N

LUT

A LUT can be applied either before or after the OpenColorIO pass — set the LUT Order option to PreColorConfig or PostColorConfig as needed.

Shortcuts:

• Toggle LUT enabled: Ctrl+K

Supported LUT formats

The following LUT formats are supported:

• flame: .3dl
• lustre: .3dl
• ColorCorrection: .cc
• ColorCorrectionCollection: .ccc
• ColorDecisionList: .cdl
• Academy/ASC Common LUT Format: .clf
• Color Transform Format: .ctf
• cinespace: .csp
• Discreet 1D LUT: .lut
• houdini: .lut
• International Color Consortium profile: .icc
• Image Color Matching profile: .icm
• ICC profile: .pf
• iridas_cube: .cube
• iridas_itx: .itx
• iridas_look: .look
• pandora_mga: .mga
• pandora_m3d: .m3d
• resolve_cube: .cube
• spi1d: .spi1d
• spi3d: .spi3d
• spimtx: .spimtx
• truelight: .cub
• nukevf: .vf

Different formats may be available depending on how DJV was built.

Color

Basic color adjustments:

• Add — Add a constant value to each channel.
• Brightness — Scale the overall brightness.
• Contrast — Increase or decrease contrast around the midpoint.
• Saturation — Adjust color intensity, from grayscale up to oversaturated.
• Hue — Rotate the hue.
• Invert — Invert the image colors.

Levels

Levels remap the input tonal range to an output range, similar to the levels control in an image editor:

• In low / In high — The black and white points of the input.
• Gamma — A midtone adjustment applied between the input and output ranges.
• Out low / Out high — The black and white points of the output.

Exposure

Exposure controls mimic film response and are useful for high-dynamic-range images:

• Exposure — Overall exposure, in stops.
• Defog — Subtract a fog (haze) value.
• Knee low / Knee high — The range over which the highlight roll-off (the “knee”) is applied.
• Gamma — A final gamma adjustment.

Soft clip

Soft clip gently rolls off values approaching white instead of clipping them hard, which helps preserve detail in bright highlights.