Size for the room and the slides
Conference content is meant to be read — charts, agenda, captions — so viewing distance sets the size: the 192 cm image height stays readable up to roughly 15 metres of room depth as long as the slides do not use tiny type. Aspect ratio sets the width: the four-panel 256 × 192 cm wall for 4:3 slides, the five-panel 320 × 192 cm wall for 16:9 presentations and video. For a breakout room or a 30–60 person workshop the two-panel 128 × 192 cm wall is enough; for registration and the foyer, a single portrait panel with the programme, room plan and sponsor logos.


