Are the above images showing how the measurements were taken. It looks like the meter and hand have been photoshopped in as they are in the exact same position in every photo. I assume a photo was taken of the meter at each location as the image does show the reading on the display and then overlayed on the scene. Also the angle of the hand would be reading more of what is behind the camera than the scene itself.
21 Scenes Lux Readings For Video Surveillance
Published Aug 11, 2016 13:57 PM
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Key ********
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Test ******
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Measuring ***** ******
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Lighting ***************
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Comments (9)
UI
Undisclosed Integrator #1
Aug 12, 2016
Campbell Chang
Aug 12, 2016UI
Undisclosed Integrator #1
Aug 12, 2016Ok, so it is Photoshopped as I assumed. They went to a lot of effort when an overlayed text of the measurements would have been fine.
John Scanlan
Aug 12, 2016The photos were taken a moment after the lux reading was documented. I have a very talented coworker who handles our video production and some of our image work.
U
Undisclosed #2
Aug 12, 2016What are the cons of standing where the camera is to be and pointing the lux meter towards where the subject will be?
Naively perhaps, one might think that would correlate more to "lux level at sensor".
Brian Karas
Aug 12, 2016Because in that case you are reading the light level at the camera, which has nothing to do with the light level where the subject/target is.
A camera reacts to light reflected off an abject, and different objects have different reflectivity (clothing is around 15-20% typically). You need to know how much light is available where your subject will be so you can attempt to determine how much of that light will actually make it back to the camera's sensor.
U
Undisclosed #2
Aug 13, 2016You need to know how much light is available where your subject will be so you can attempt to determine how much of that light will actually make it back to the camera's sensor.
That's what I'm saying, why not measure the light that will actually make it back to the camera?
U
Undisclosed #2
Aug 13, 2016MM
Michael Miller
Aug 12, 2016Hunan Springs made the list! Nice