Sony H20 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, 3:2 and 16:9. H20 has a native ISO range of 100 - 3200 but unfortunately, Sony H20 doesn't have RAW file support. If you need a Compact camera with a RAW support, consider Sony ZV-1 or Canon PowerShot G5 X Mark II in the same price range.
Sony H20 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 Sony H20 vs Canon SX740 HS or take a look at Highest resolution Compact cameras list.
Let's look at how the size of the Sony H20's 1/2.3-inch sensor compares with other standard sensor sizes.
Comparison image of Sony H20 Sensor Size with other standard sensors
Sensor size is what determines the circle of confusion, and therefore how much
depth of field Sony H20 gives you at any given aperture.
You can
calculate
the exact depth of field for the Sony H20
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.
