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A Question About CRT Monitors
Old 09-30-2004, 05:00 PM   #1 (permalink)
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I'll be the first one to admit that technology and I do not get along too well, but I'm really perplex enough to ask a question about CRT Monitors and color steadfastness.

Currently I'm using a Sony 19" HMD-A440 Triniton color computer display. I don't believe that my operating system has any bearing on my, perhaps self induced, dilemma, but I'm using a MAC, version 10.2.8 for informational purposes.

I lean on liking the attempted images I "produce" a little on the "warm" side; sorry it's my personal preference (I'm a novice, and no where near a photographer status). Anyway, I find that after working on an "image" for awhile, that I thought at that time was " a bit warm", leaving and returning to my work station without moving the image on the monitor (maybe 10 minutes or so), I find that the image becomes quite a bit more on the "cool" side. When I initialized my system, I always allow the monitor to "warm" up, at least a hour. before attempting any color corrections (a bit of added info).

Bottom line, is this something I should expect in the CRT, or am I in need of a new eye exam. I guess that I'm just asking for an explanation of why this would happen( sigh). Thanks :-)

EQ
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Re: A Question About CRT Monitors
Old 09-30-2004, 07:32 PM   #2 (permalink)
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Its not your monitor, its your eyes/brain.

Your eyes to become "accustomed" to veiwing certain colors for prolonged periods of time, and when you get up and leave your computer, and look around at OTHER objects for a while, your eyes will kind of "reset" themselves after a while. Causing the image on the monitor to "look" different when you go back to it.

Remember the old optical illusion of looking at say a blue square on a white piece of paper for a few minutes, then you look away and look at a plain white sheet of paper, and you will see the ghost image of a YELLOW square on the paper?

I suspect you are seeing a similar effect.

Or think of it this way, ever shoot a photo under a certain temprature of lighting, which at the time LOOKED "white" to you, yet your camera shows a definate color cast? Your eyes and brain attempt to "normalize" the color when your looking at it for a certain period of time. But the camera captures what is acutally there. Just like when you go BACK to your monitor after being away for a bit, your eyes are no longer "balanced" to the image like they were when you had been looking at it for a while.



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Re: A Question About CRT Monitors
Old 09-30-2004, 09:18 PM   #3 (permalink)
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I agree with the eye playing tricks and eye fatigue. Sometimes it is a good idea to look at your images on another monitor just to see if the color changes. One thing you can count on with CRT screens is that in time they will start to wear out. Tubes will start to throw odd colors and images will start to be dimmed, or blurry. If your just starting to notice your work being off color and your monitor is 3+ years old it could be not just your eyes, but your screen too.
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