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In response to
"nit? -- nm"
by
mud
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to quote myself (this was in a report commissioned by a customer of mine)
Posted by
colin (aka colinski)
Oct 8 '22, 10:32
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TL;DR - it's a measure of direct view screen brightness, you want about 500 nits. also consider that LEDs end up at half brightness over the course of 10 years, so get one that will be bright enough at the end.
"Direct view screen brightness is measured in nits. Task lighting, indoor lighting sufficient to perform examination and writing tasks has a range of 325 nits on the high end and 36 nits on the low end before it is either uncomfortable to view or unusable for tasks.
Additionally, 1000 nits of screen brightness are required to view a display in direct sunlight. Three times the task lighting is the rule of thumb for display brightness that can be comfortably viewed, giving 975 nits on the high end, 108 nits on the low end.
A typical indoor DV LED wall ranges from 500 to 1000 nits overall and can be set to any amount of dimming. It is important that video walls are set appropriately for the space, not to the maximum amount of brightness as it can cause significant discomfort. A lighting designer should be consulted to provide task lighting levels that installation technicians can use to adjust the video wall.
DV LED wall can also be adjusted in brightness to match other scenarios such as low lighting for viewing a video, bright video to combat bright sunshine during the day and dimmed at night to match the environment.
These settings are especially important as the life of a DV LED wall is not measured in device failure but rather in dimming of the LEDs to half brightness. If a space requires 500 nits of brightness on the high end to be functional, a wall with at least 1000 nits would be required to make sure it is still functional at 10 years."
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