As HarbingerDawn mentions, dust particles absorb sunlight in the 0.4-0.6 µm (purple to orange) range and alsp scatter photons in all wavelengths up through 3 µm (3000 nanometers or infrared). However, the Martian sky appears more reddish to human eyeballs, than for example, those of the charge coupled device (CCD) supported by color filter wheels on the Rover Panoramic Camera, as shown in the pic. Hazy Martian Skies
Eyeballs have "rods" and "cones" with very different operating principles. Rods dominate under very low light, such as moonlight while cones dominate under bright light, such as sunlight. Rods respond to a range of shorter wavelengths, and since there is only one type, they do not yield color information like the three types of cones responding optimally to blue, green, and red. Also, because rods are rare at the focal point of the eye, low light vision is often blurry. Camera sensors do not vary in this manner.
Mars is 1.5 times as far from the sun as Earth, so solar energy per unit area at Mars is about 48% that on Earth, ignoring atmospheric effects, but still considered bright at highnoon. At Saturn, 9.5 times as far, solar brightness is roughly 1% of that at Earth orbit, comparable to the level of sunlight on a moderately cloudy day. Sometimes, you get the best color photos on days like that.
In addition to consider, your personal view is, well, unique. The brain processes data from the retina in a very complex manner, and the gradations of color can be person-specific. You'd also have on a visor if you were on the surface, hopefully. Camera photos from orbit are not taken inside an atmosphere or at highnoon either.
And, of course, NASA doctors all their pictures.
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