The Ricoh WG-20 has a better sensor type than most waterproof cameras that came out around the same time as it. This camera has a CCD sensor type, whereas most cameras that have been available for around the same time as it have a MOS sensor type. CCD sensors produce high quality, low-noise images but consume a lot more power than CMOS sensors. CCD is the most common image sensor type used in digital cameras.
A CCD sensor type is actually the best sensor type across all digital cameras of a comparable age and type to the WG-20.
A MOS sensor type is the worst sensor type amongst comparable types of camera.
We compared this camera to all the other digital cameras that have a CCD sensor and we think the Panasonic Lumix DMC-FT3[plb_636880_price], and the Nikon Coolpix S31[plb_1721874_price] which has better reviews is also worth considering.