Last night, NASA successfully landed the Curiosity rover on Mars, sending back its first picture to international acclaim. We've seen a couple of other small images beam back, but the question all us gearheads want to know is: what cameras do they have on board? Thankfully, NASA loves to tell us this stuff.
The Mars Science Laboratory (MSL, aka the Curiosity) has two mast cameras, as seen here. One has a fixed 34mm f/8 lens that covers a 15° field of view, covering 1200x1200 pixels on a 1600 by 1200 CCD. The other is a fixed 100mm f/10 lens, with a 5.1° field of view on an identical sensor. You can see some pre-launch images taken with them here.