In this Light Talk bonus, Daniel Green gives Martin Klaasen a hands-on tour of Dusk, his lighting-specific AI agent that turns rough sketches, reference photos and text prompts into lighting concepts, and of Lumviewer, his photometric tool for comparing luminaires from LDT and IES files. Daniel explains why he built Dusk as a dedicated lighting agent rather than relying on generic tools, shows how it handles beam angles, colour temperature, wall grazing, focal glow and realistic placement, and introduces Dusk GPT and Dusk Studio, the local version in development. It follows the full episode, Daniel Green: Transforming Lighting Design with AI. Links: dusk-ai.co.uk and lumviewer.replit.app