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Applications and Ways of Measuring Light Intensity Using a Lux Meter


Lux meters are best known to measure the intensity of light precisely. Now, the question arises how to measure light intensity using a digital lux light meter. Let us look into it in details :

Compute the square of the distance, then multiply it by Pi and next by four. The result is a radius which is similar as the specific space from the source.
The next step is to divide the light concentration calculated in lumens by the spherical area. The product is the lux.


A correction factor needs to be applied if the light reaches the surface at an acute angle. It is done when you multiply the resultant lux value by the cosine of the off-axis angle.

Applications of Lux meter

i) Photography and Video Filming - When you measure the light in lux, photographers can easily adjust the shutter speed as well as the depth of field in order to get outstanding picture quality. The lux meter is also a lot in use for filming outdoor scenes as it allows too many adjustments in order to ensure that the scenes which are filmed in different levels of light have a regular level of brightness on screen.

ii) Health and Safety regulations - Lux meters are mainly used to check if the brightness of a room is sufficient in order to confirm to any norms that are designed to protect workers from experiencing damage to their eyesight. A lux meter takes into account the room size in a way in which simply measuring the intensity of the light source in lumens would not.

iii) Photographic Mesurements - Lux meter measures the illuminance of the subject of the photography. At the time of using a lux light meter, the photographer can estimate the aperture number and the exposure setting.

You can now buy Digital Light Meter at various online portals. Opt for Lux Meter Online and rest assured to get the best lux meter price.

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