Grade the edges.
Solve the picture.
No halos.

Records: how the picture gets built

GD DRT Pro builds colour the way film's rules work, not by copying any one stock. The picture runs through layered dye records and comes back together subtractively. You steer it from Film Emulsion Controls:

• Record Crosstalk softens saturation through the mids.
• Highlight Crosstalk pulls bright colours toward white sooner.
• Interimage pushes colours apart and deepens saturation.
• Dye Impurity mutes and darkens saturated colours.
• Density Range gives richer, darker colour.

Main Look up top has the broad strokes: Emitter Bulb, Global Density, Global Saturation, RGB Drive, CMY Drive, Contrast, Mid Grey Shift, and RGB and CMY rotates.

Three looks to start from, plus your own

Open the Presets drawer and pick a starting look: Balanced Modernity (where every new node starts), Faded Glory or Silver Screen. Default Settings takes you back to a clean slate.

Like what you built? Name it in Preset Name and hit Save. Export writes the look to a file you can hand to someone else, and Import loads one in and applies it. Tweak a preset and the menu marks it (Customized) so you always know you've moved off the original.

White Mode

The emitter is the light the whole picture thins out toward. White Mode sets how bright that white is in one click:

• SDR is 100 nits, with Diffuse White off.
• SDR as HDR 203 Nits Diffuse puts the emitter at 406 nits with Diffuse White at 0.5, so the body of the picture sits at 203 nits and the top slice climbs to 406.
• Custom kicks in the moment you move White Intensity (nits) or Diffuse White by hand.

Scorched sets how much of the top of the range punches through to full white, and Bleach sets whether that slice keeps its own hue or takes the emitter's.

Display Encode & Reference Monitor

Display Encode covers SDR and HDR deliverables: Gamma 2.4 (the default), Gamma 2.2, Gamma 2.6 (DCI), PQ (ST 2084), HLG, plus Linear/Custom and Linear/HDR.

Reference Monitor tells GD DRT Pro what you were looking at while you built the look. Set it once and switching encodes keeps the light you graded, instead of the picture jumping every time you change deliverables.

Grain & halation by gauge

Pick a film gauge and the texture follows: Grain and Halation each offer Off, 65mm, 35mm or 16mm.

• A smaller gauge gets enlarged more to fill the frame, so its grain reads larger and more visible.
• Grain Strength runs 0 to 2. 1 is the gauge's calibrated level.
• Halation is the warm glow film puts around bright highlights. A smaller gauge gives a wider, stronger halo.

Six hues, each with its own drawer

Red, Yellow, Green, Cyan, Blue and Magenta each get Hue Rotate, Saturation, Density, Drive, Range, Tone Focus, Tilt and Dye Twist. Twist Primaries and Twist Secondaries bend the path a colour takes from shadow to highlight, like a dye shifting hue as it gets thicker or thinner.

Because it all runs through the solve, even a big hue move stays clean at the edges.