The SP-810UZ has a better sensor type than most MILC digital cameras that have been available for a comparable time to it. This digital camera has a CCD sensor type, whereas most digital cameras of this age and spec 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 amongst all cameras of a similar spec and age to the SP-810UZ.
The worst sensor type across comparable types of camera is MOS.