Clarification of Visual System Rules

[Greg McKaskle]

One thing to consider is that camera sensors have a lower dynamic range than the human eye -- thus the popularity and difficulty of HDR photography.

The green CCT used several years ago will look super-bright-intense green to your eye. To the camera with normal exposure, it will look white with a green edge. The sensor is overexposed and the color of the light saturates. To correct for this, you need to lower the time of exposure, add a neutral density filter -- camera sun-shades, or in some other way lower the amount of light the sensor collects.

The reason I mention this phenomenon, is that if you see a ring of LED color, and a white interior where the retroreflective tape is, it means you have too much light. Since the tape reflects 600X as much light as white paint, this is easy to do.

In the end, it is the placement of the light near the camera that causes the shine, and it actually doesn't take that much.

Greg McKaskle