http://www.steves-digicams.com/fuji4900.html#specs This is the cam I have, apparently it uses a technology called SuperCCD. Basically, instead of laying light sensors on the CCD square to each other like most other cameras do, this one uses octogonal-shaped sensors, leaving space between them and later "guessing" what colour was in those spaces when the picture is taken. http://www.dpnow.com/vintage/news/0103/news250/pr250a/superccd-sr.gif So even though the sensor has 2.45 million pixels, it is capable of creating a 4.3mpixel image by adding those scattered pixels in between existing sensors. From the review on steve's website it seems that the 4.35mpixel interpolated images appear soft and lack detail. I need a testing system to figure out whether it is worth it to take 4mpixel pictures or I shouldn't even bother and go with 2mpixel mode and interpolate/fractualize when I need to. Is there an easy setup to shoot sample pictures from that would make the difference very obvious. ... as well I also need to find out whether iso 125 and iso 800 mode really are useless on this camera as the steves review states. Is there any way of testing the amount of grain in the image precisely ?