What is required for using a teleprompter outdoors?
What are normal ambient light levels? Indoors it can range from 50-150 nits. Outdoors, on a sunny day, it can range from 250-500 nits. So, the LCD has to put out enough light to compete with its surroundings, say twice the ambient light level, or 250 nits indoors and 1000 nits outdoors. (A typical CRT is about 150 nits). But light output alone still doesnt provide a useful image unless there is adequate contrast a 1500 nit display with a low contrast ratio is only a bright fuzzy blob. Contrast Ratio is the difference between the least brilliant and most brilliant areas on the screen. javascript:Route(‘U’); Update Whats a good CR? The 400:1 and 500:1 contrast ratios proclaimed on the back of the brochures are measured (you guessed it) in a pitch-black room. In the real world of ambient light, a pleasing display will have an effective CR of about 5:1. The effective CR is a result of the nits produced by the display and ambient nits reflected from the display face. A 1000 nit display bein
