One of the often raised questions about GDTF is "which data is required to be included inside GDTF files". This can be dependent on the use-case for the file and it is always subjective, but here we try to summarize the issue to provide a hierarchical approach to understanding user needs. GDTF Data expectation per use-case: Use case → Control Planning Previz Rendering Feature ↓ Fixture name essential essential essential essential Manufacturer essential essential essential essential RDM complementary Description complementary essential essential essential Product image complementary essential essential essential 2D thumbnail complementary essential complementary complementary Operating temperatures complementary Weight essential Leg height essential complementary complementary 3D model template essential essential essential essential 3D model real fixture complementary complementary complementary essential 3D model PBR workflow peripheral Beam model basic shape essential essential Beam model real world complementary complementary 2D model symbols complementary Gobo images essential complementary complementary essential Prism slots complementary complementary essential Color slots essential complementary essential Animation wheels complementary complementary essential Virtual channels (dimmers, tilt…) essential Channel dependencies complementary DMX (control) description essential essential essential DMX Macros complementary Beam data complementary complementary essential Colors (emitters, filters) complementary complementary essential Movement speeds complementary complementary essential Movement acceleration complementary complementary essential Movement ranges essential complementary complementary Movement directions essential complementary complementary DMX profiles (curves) complementary complementary complementary Subphysical properties peripheral Wiring object data (Power usage...) complementary GDTF Data expectation combined: Essential Nice to have Like to have Basic metadata Fixture name Manufacturer RDM Description Product image 2D thumbnail Operating temperatures Weight Symbols Leg height 3D model template 3D model real fixture 3D model PBR workflow Beam model basic shape Beam model real world 2D model symbols Media Gobo images Prism slots Color slots Animation wheels Control Virtual channels (dimmers, tilt…) Channel dependencies DMX (control) description DMX Macros Physical measurements Beam data Colors (emitters, filters) Movement speeds Movement acceleration Movement ranges Movement directions DMX profiles (curves) Subphysical properties Wiring object data (Power usage...)