I asked ChatGPT to create film emulations for use in Lightroom, for Agfa CT-18 and Agfa CT-21 (my beloved slide films from yesteryear). I was presented with comprehensive recipes, which work (at least, to my eyes). Here is CT-18. BASIC PANEL Exposure: 0.00 (adjust per image) Contrast: -10 Highlights: -20 Shadows: +10 Whites: +5 Blacks: -5 PRESENCE Texture: 0 Clarity: …

