| You can measure illuminance using a light meter located on the work surface where tasks are performed. |
| Merely complying with the specified illuminance levels for the task will not satisfy this requirement. |
| If a dimmable ballast is used, illuminance can be varied at will according to time of day and lighting situation. |
| In the images below, for example, the lux value represents the illuminance at the point of the tree or in front of the building. |
| In halls with zones having remote windows or an absence of windows, higher levels of illuminance improve visual comfort. |
| When a lux value is measured in a scene, it only represents the illuminance at the object in focus. |
