Sailor Don
17th of September 2004 (Fri), 08:38
This is a technical question for the critique corner.
Back in the "old days" when digital cameras cost $20,000, color video cameras were quite popular. I noticed when trying to capture a computer screen image on a video camera, that all the yellows were overexposed to the point where they appeared white. All other colors appeared to be rendered accurately by the video camera.
Digital cameras use similar technology on the image sensor, but I would assume with much higher quality, not only in resolution, but in color accuracy.
When I took this picture, I was surprised to see that some of the yellow neon tubes were "whited out". There is something about the yellow phosphors in neon tubes and CRT's that screws up the digital image sensors. Perhaps they are emitting lightwaves outside the range of the human eye, but not outside the range of the image sensor.
For reference, the tube under "FAMILY POOL HALL" appeared to be a bright yellow to the eye. To the image sensor, it has become almost white. All the other colors are reasonably accurate reproductions of the original as I recall them.
The question is, what is the response of digital camera image sensors to lightwaves beyond the visible spectrum? I've never seen this data published anywhere.
http://users3.ev1.net/%7Esailord/houstonarts/img12.jpg
Back in the "old days" when digital cameras cost $20,000, color video cameras were quite popular. I noticed when trying to capture a computer screen image on a video camera, that all the yellows were overexposed to the point where they appeared white. All other colors appeared to be rendered accurately by the video camera.
Digital cameras use similar technology on the image sensor, but I would assume with much higher quality, not only in resolution, but in color accuracy.
When I took this picture, I was surprised to see that some of the yellow neon tubes were "whited out". There is something about the yellow phosphors in neon tubes and CRT's that screws up the digital image sensors. Perhaps they are emitting lightwaves outside the range of the human eye, but not outside the range of the image sensor.
For reference, the tube under "FAMILY POOL HALL" appeared to be a bright yellow to the eye. To the image sensor, it has become almost white. All the other colors are reasonably accurate reproductions of the original as I recall them.
The question is, what is the response of digital camera image sensors to lightwaves beyond the visible spectrum? I've never seen this data published anywhere.
http://users3.ev1.net/%7Esailord/houstonarts/img12.jpg