The Polaroid iE090 has a CCD sensor type which is better than most recently released digital cameras. Most digital cameras that have been around for a similar time to 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.
This digital camera's sensor type (CCD) is in fact the best sensor type amongst all cameras that have been available for the last year.
Amongst comparable types of digital camera the worst sensor type is CMOS III.