by FXTD Studios
v2.1.0
76 Nodes
GPU Accelerated
ComfyUI
Open Source
Professional HDR image processing suite for ComfyUI.
Color grading, film effects, temporal video processing, and an industry-grade interactive viewer.
◎ What's New in v2.1.0
Release — Feb 26, 2026
9 new nodes, a complete Radiance Viewer overhaul, and requirements cleanup. 89/89 VFX audit tests pass.
◎ Special Thanks: To our amazing beta testers and the ComfyUI community for their
invaluable feedback and bug reports in making v2.1.0 possible!
Radiance Viewer Overhaul
CDL export/import, GPU histogram (H key), fp32 pick buffer, LRU frame
cache, Display-P3 detection, linear false color & zebra
Grade Match & LUT Pipeline
LAB shot-to-shot color matching, grade_info JSON roundtrip, Apply Grade
Info node, LUT Bake (33³ .cube), LUT Apply with trilinear interp
Temporal Video Tools
Temporal Smooth — per-pixel EMA with motion-aware masking removes AI
flicker. Flicker Analyze — measures frame-to-frame luma consistency
False Color as IMAGE
7-zone calibrated false-color (Crushed→Clipped) baked as IMAGE output —
usable in headless batch pipelines without the viewer open
Blend Composite Node
8 blend modes: Normal, Add, Screen, Multiply, Overlay, Soft Light,
Difference, Divide. Optional MASK pin for per-pixel coverage. HDR-safe
Sampler Pro v3.6
Fixed 6 critical bugs: sigma schedule off-by-one (BUG-28), AYS Flux
anchors (BUG-33), guidance deep-copy overhead, double noise injection
◎ Quick Start
Installation (1 minute)
cd ComfyUI/custom_nodes
git clone https://github.com/fxtdstudios/radiance.git
cd radiance
pip install -r requirements_windows.txt # or _linux / _mac_siliconOr use ComfyUI Manager — search for radiance and click Install.
Basic Workflows
HDR Image
Image → ImageToFloat32 → Float32ColorCorrect → HDRToneMap → SaveImageEXRFilm Look
Image → RadianceGrade → FXTDFilmGrain → FXTDLensEffects → RadianceViewerGrade Matching (New v2.1)
SourceShot ──┐
├→ RadianceGradeMatch → matched_image
Reference ──┘ → grade_info → ApplyGradeInfo(OtherShot)LUT Export for Resolve / Nuke
RadianceGrade → grade_info → RadianceLUTBake → grade.cube
any_image → RadianceLUTApply(grade.cube) → graded_imageVideo Flicker Fix (New v2.1)
video_batch → RadianceFlickerAnalyze → flicker_report
video_batch → RadianceTemporalSmooth(alpha=0.6, motion_aware=True) → clean_video⌨ Viewer Shortcuts
The Radiance Pro Viewer is keyboard-driven. All operations are instant — no menus.
F Fit to View
1 100% Zoom
R Red Channel
G Green Channel
B Blue Channel
L Luminance
C RGB Color
H GPU Histogram
W Waveform
V Vectorscope
E False Color
Z Zebra
A A/B Compare
P Fullscreen
T Export EXR
◎ Export Menu
Pro tip
The ◎ Save menu in the viewer includes Export CDL (Grade) — saves your current grade as an ASC CDL v1.2 XML file readable by Nuke, DaVinci Resolve, and any OCIO pipeline.
◎ Node Overview
All 76 nodes are organized into 12 categories. Click any category to jump to its full documentation in the Node Reference.
| Category | Nodes | Highlights |
|---|---|---|
| ◎ Color Grading | 12 | Grade, GradeMatch, ApplyGradeInfo, LUTBake, LUTApply, ACES 2.0, OCIO, Log curves |
| ◎ Scopes & Analysis | 5 | FalseColor, Waveform, Vectorscope, QC Pro |
| ◎ Video & Temporal | 5 | TemporalSmooth, FlickerAnalyze, ReadVideo, ReadSequence, WriteVideo |
| ◎ Compositing | 2 | BlendComposite (8 modes), MetadataOverlay |
| ◎ Film & Camera | 8 | FilmGrain, LensEffects, FilmLook, ProFilmEffects, Camera, WhiteBalance |
| ◎ HDR & Dynamic Range | 7 | Float32, ExposureBlend, ToneMap, ShadowHighlight, HighlightSynth |
| ◎ Export / Import | 6 | SaveEXR, LoadEXR, Save16bit, SaveHDRI, ProjectEXR |
| ⬆ Upscale | 7 | ProUpscale, BySize, Tiled, AI (RealESRGAN/SUPIR), Sharpen, Downscale, BitDepth |
| ◎ Depth & AI | 2 | DepthAnythingV2, DepthVisualize |
| ◎ Sampler & Prompt | 4 | SamplerPro, CinematicPrompt, SimpleToFlux, DNA |
| ◎ Pipeline & Project | 5 | UnifiedLoader, ProjectSettings, ProjectEXR, Studio, NukeLink |
| ◎ Viewer | 3 | RadianceViewer, RadianceProViewer, ProViewerAdvanced |
◎ Technology
| Library | Purpose |
|---|---|
| OpenColorIO | Industry color management (ACES, OCIO configs) |
| OpenEXR | Professional 32-bit HDR file format |
| colour-science | Color space math and transforms |
| PyTorch | GPU acceleration (CUDA + MPS) |
| OpenCV | Real-time image processing |
| Pillow | Image I/O and compositing helpers |
| HuggingFace Transformers | Depth estimation AI models |