Fujifilm S8100fd has a 10.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor . You can shoot at maximum resolution of 3648 x 2736 pixels with aspect ratios of 4:3 and 3:2. S8100fd has a native ISO range of 64 - 6400 but unfortunately, Fujifilm S8100fd doesn't have RAW file support. If you need a Compact camera with a RAW support, consider or in the same price range.
Fujifilm S8100fd 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 S8100fd vs Canon SX740 HS or take a look at Highest resolution Compact cameras list.
Let's look at how the size of the Fujifilm S8100fd's 1/2.3-inch sensor compares with other standard sensor sizes.
Comparison image of Fujifilm S8100fd Sensor Size with other standard sensors
Sensor size is what determines the circle of confusion, and therefore how much
depth of field Fujifilm S8100fd gives you at any given aperture.
You can
calculate
the exact depth of field for the Fujifilm S8100fd
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.