Julian Gnass

AI Image Creation

Where VFX precision meets generative AI

With over 25 years spent chasing photorealism on feature films and streaming productions, I now apply that same eye to generative AI.

My workflow is built around ComfyUI with Flux, Z-Image-Turbo and Nano Banana — custom node graphs tuned for cinematic lighting, accurate skin response, and commercial-grade colour reproduction. Every image below is a deliberate creative and technical decision, not a lucky prompt.

What I Use AI For

👁

Look Development

Rapid iteration on colour, lighting and mood — the same decisions I make in Nuke or DaVinci Resolve, but with generative feedback loops that compress weeks into hours.

🎬

Concept & Pitch Visuals

Pre-production imagery, moodboards and client-facing pitch decks that communicate a visual direction before a single frame is shot or rendered.

⚙️

Pipeline & Tooling

Beyond prompting: I build and extend workflows in ComfyUI, and develop tools that integrate AI into production pipelines — including PowerFolio, my character-sheet application for film & TV.

Character Consistency

Same character. Different scene.

I train custom LoRA models on specific characters — meaning Peter and Laura remain recognisably themselves across lighting conditions, outfits, angles and narratives.
No 3D asset. No model agency. A trained model and a ComfyUI graph.

Peter
Peter — page 1 Peter — page 2
Laura
Laura — page 1 Laura — page 2

Built for the Work

🖥️

Eizo 4K

Calibrated reference display. Every pixel, colour-accurate.

RTX 5090 · 32 GB VRAM

Full-scale model inference at maximum resolution. Locally.

🔥

Ryzen 9 9950X3D · 16-Core

AMD's fastest desktop CPU. Parallel pipelines without bottlenecks.

🧠

192 GB RAM

Headroom for the heaviest multi-model and batch workflows.

The Stack

AI Generation
ComfyUI Flux Z-Image-Turbo Nano Banana JGN_promptBuilder (custom node) ✦
Compositing & Grade
Nuke Indie DaVinci Resolve Affinity Suite Canva
Production
ShotGrid / Flow PT
Video Generation
Kling AI Wan 2.2 LTX Video 2.3

From first prompt to final grade — every stage of the pipeline, covered.

I also build the tools.

PowerFolio is a character profile sheet application for film, TV and games production. Unlike the generation tools, PowerFolio itself never touches a server — no uploads, no account. NDA-safe by design. Use it with photography, concept art, scanned drawings, or AI-generated characters. Entirely your choice.

See PowerFolio →
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