The Luxmedia 16-Z52 has a CCD sensor type which is better than the CMOS sensor type found on most comparable spec cameras that have been available for a similar time to it. 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.
This camera's sensor type (CCD) is actually the best sensor type amongst all cameras of this spec and age.
The worst sensor type across similar types of camera is MOS.