Master Lighting and Rendering in Houdini (Solaris + Karma) by Alex Toth

Your renders look fine, but not finished. This workshop is about fixing exactly that — using Solaris, Karma, and smart comp to get that final 10% that separates junior work from pro work.

🎯 What you’ll learn

• Light shots from scratch in Solaris with Karma lights and USD workflows
• Set up clean, efficient Karma renders without noise and endless render times
• Use AOVs and render passes to keep full control in comp
• Add depth and realism with exposure, volumetrics, and light mixing
• Finish shots with pro compositing tricks that sell scale and mood

✅ Requirements

• Skills: Basic understanding of Houdini interface and 3D fundamentals
• Tools: Houdini 19.5+ (Apprentice, Indie or FX), 3-button mouse
• Hardware: 16GB+ RAM, dedicated GPU, 64-bit OS recommended for Karma XPU/CPU

📝 Description

Most people spend 90% of their time on modeling and FX, then rush the light and render. That’s backwards. Clients and studios judge you on the final image, not your node graph. This workshop flips that — you learn to think like a lighter.

Alex walks you through real production habits in Solaris and Karma. Not button-tour stuff. How to place a key, when to kill a fill, how to use USD light mixing to art-direct fast, and how to keep your scene light enough to iterate. You’ll see what settings actually clean up noise versus what just burns render time.

Then comes comp, where shots get saved. You’ll take your AOVs apart and put them back together with intent — balancing exposure, shaping contrast, adding atmosphere without muddying the render. Short lessons, direct feedback, no fluff. By the end you’ll stop guessing and start making calls that hold up on a reel.

🧑‍🎓 Who this course is for

• Houdini artists whose renders feel flat and want that pro-level finish
• Lighters, generalists, and FX artists who want a solid Solaris + Karma workflow for work

🧑‍🏫 About the Author

Alex Toth is a Lighting and Compositing Supervisor working in high-end film and episodic VFX. He has spent years lighting shots and wrangling Karma and USD pipelines under real deadlines, where pretty isn’t enough — it has to render and deliver. He teaches the way supes actually give notes: direct, practical, and focused on what gets you hired.

🏁 Final Result

• A finished, portfolio-ready lit and comped shot built in Solaris / Karma, with clean passes and a final grade that shows you can take a project across the finish line.