This is a complete, single-file application designed for cinematographers and lighting designers. It uses no external frameworks (only Tailwind CSS and Lucide icons for design) and manages all state in-memory. ```html Free Studio Lighting Gobo Shadow Sharpness Calculator

Free Studio Lighting Gobo Shadow Sharpness Calculator

Professional-grade optics simulation for lighting design.

Quick Presets

Parameters

Light Source Diameter 15 cm

Dist. Light to Gobo 1.5 m

Dist. Gobo to Surface 2.0 m

Calculated Penumbra

0.00 cm

Visualization

Calculation History (Session Only)

No calculations saved yet.