FujiFilm F80EXR has a 12.0MP 1/2-inch (6.4 x 4.8 mm ) sized CCD sensor and features EXR processor. You can shoot at maximum resolution of 4000 x 3000 pixels with aspect ratios of 4:3, 3:2 and 16:9. F80EXR has a native ISO range of 100 - 1600 which can be boosted to 12800 but unfortunately, FujiFilm F80EXR doesn't have RAW file support. If you need a Compact camera with a RAW support, consider Nikon Coolpix P7800 or Leica Q (Typ 116) in the same price range.
FujiFilm F80EXR is not the highest resolution Small Sensor camera. Canon SX740 HS with its 21.0MP sensor is leading in this class. Check the comparison of FujiFilm F80EXR vs Canon SX740 HS or take a look at Highest resolution Compact cameras list.
Let's look at how the size of the FujiFilm F80EXR's 1/2-inch sensor compares with other standard sensor sizes.
Comparison image of FujiFilm F80EXR Sensor Size with other standard sensors
Sensor size is what determines the circle of confusion, and therefore how much
depth of field FujiFilm F80EXR gives you at any given aperture.
You can
calculate
the exact depth of field for the FujiFilm F80EXR
at any focal length, aperture and subject distance, including the hyperfocal distance
for landscapes and how close you can get before the focus zone becomes too thin.