Ricoh CX1 has a 9.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CMOS sensor and features Smooth Imaging Engine IV processor. You can shoot at maximum resolution of 3456 x 2592 pixels with aspect ratios of 1:1, 4:3 and 3:2. CX1 has a native ISO range of 80 - 1600 but unfortunately, Ricoh CX1 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.
Ricoh CX1 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 Ricoh CX1 vs Canon SX740 HS or take a look at Highest resolution Compact cameras list.
Let's look at how the size of the Ricoh CX1's 1/2.3-inch sensor compares with other standard sensor sizes.
Comparison image of Ricoh CX1 Sensor Size with other standard sensors
Sensor size is what determines the circle of confusion, and therefore how much
depth of field Ricoh CX1 gives you at any given aperture.
You can
calculate
the exact depth of field for the Ricoh CX1
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.
