Graphics peeps: Could Rayleigh scattering cause a visible hue shift in an image viewed on a CRT monitor, either to the eye or in a photo?
Presumably, the glass used in CRTs is intended to be an ideal transmission medium, but in real life, nothing's ever 100% ideal.
@Atrix256
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Those segments I referred to? They're nearly white. The green sphere sprites are obviously tinted more towards aquamarine. This brings up a number of questions in my mind, thoughts on how this might be the case, and I'm not sure which is the most plausible.
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I didn't take the pics, so I don't have first-hand knowledge of the actual look, but: - As
@ewzzy points out, perhaps the camera just has a colder white balance. - The camera might have a CCD that's more sensitive towards blue hues.Näytä tämä ketju -
- The CRT tint knob might be off. - The CRT's blue phosphors may be more vibrant or have a different wavelength than the CRT that the current phosphor sim in MAME is tuned to. - The f-number of the camera may have been such that phosphors of a certain wavelength were overexposed.
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Lastly, but what I'm most interested in, is I wonder if there's the potential for Rayleigh scattering through the glass medium used in CRTs, which might cause images viewed through it to exhibit a certain natural tint. So, graphics Twitter. Thoughts?
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You're certain your camera isn't white balancing colder?
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Getting to that.
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I think you should be asking yourself how the developers calibrated -their monitors.- It's possible that they designed it so the colors looked right in their test systems... but not quite the same on a player's TV screen.
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Monitors, as well as TVs, also have variable color temperature. This is especially true with CRTs since there's more to it than a mathematical operation (and color reference monitor allow you to set this). So a proper emulation should allow you to configure this.
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