Why Film Grain Changes with Exposure | Granularity vs Graininess Explained

In this short I break down the difference between granularity (the physical measurement) and graininess (what we actually perceive), and why exposure is the #1 factor that makes grain pop in shadows and tighten in highlights. Plus: why the blue channel is always the grainiest and how this impacts real-world grading. 🎥 Watch the full deep dive: https://youtu.be/L0LURnNWr58?si=57ESyYyMMVU3Ek0D What you’ll learn fast: ✔ Granularity vs. graininess — and why it matters for grading ✔ How under/overexposure shifts grain size & density ✔ Channel behavior (blue green red in graininess) ✔ Practical implications for film emulation and delivery (cinema vs. streaming) Subscribe to our Love Stream channel and never miss a live event! 👉 https://luma.com/colourlab If you care about authentic film emulation, this will change how you add grain. 👉 Get the tools professional colorists use: https://colourlab.ai