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All camera sensors are actually black and white. To obtain color information, the sensors have a color filter. This filter is optional/interchangeable in this c
by miahi 14y ago
All camera sensors are actually black and white. To obtain color information, the sensors have a color filter. This filter is optional/interchangeable in this camera. To obtain a color photo, you take three shots with three different filters (R,G,B). This way you can also get UV, IR pictures - and more.
- wlievens 14y agoTo clarify that a bit more: consumer camera's use a Bayer filter, which is an alternating R/G/G/B filter over your pixel array. So, with a consumer camera you take just one picture, and then software assembles that into a color picture. For space missions you would definitely prefer a camera with interchangeable filters, because then you can also have filters for other spectrum ranges.