Talk:Jet Propulsion Laboratory/@comment-50.116.107.20-20120417064935

I've been thinking about this very issue a lot laetly. Trying to prepare myself for emigration, you know. I agree the human eye (brain?) can adapt easily to different light levels. We see a lot more in low light and high light conditions  almost simultaneously   than a camera's film or CCD can see, though CCDs are a lot better at that than film ever was.But my experience is that, at least over the short term, low light levels make it very difficult to perceive depth, as well as making it difficult to see many of the variations that we depend on for successful vision   such as texture, subtle colour shifts, wetness vs dryness, that sort of thing. I really hope the eye can adapt to low levels as easily as you suggest, but I wonder if it can do enough.As to colour, I think we're out of luck there. If there is blue in the Martian sky, I agree we'll see it a little better after we get used to the relatively palid palette of colours. But if there's little or no blue there, I don't think our eye/brain system can make it up.So, low light levels we can maybe adjust to; the lack of contrast we can probably deal with, even seeing  more contrast than is actually there. But I suspect all Martians of Earth origin will suffer from Seasonal Affective Disorder most of the time, and that can be serious in a lonely, stressful, first colony kind of situation.But this is all speculation. I'll let you know how it turns out.