How much do high pixel counts cost?
They cost virtually nothing, just a little bit of time. Moore’s law (more properly “Moore’s observation”) states that every 18 months, the number of transistors you can cram onto a given chunk of silicon (and their speed) doubles. This has held true for a couple of decades now, and shows no sign of changing. And, as far as a digital camera sensor goes, it’s priced by the overall size of the die (rectangle of silicon) it’s on, not the number of transistors you “draw” on that die. It wouldn’t be that big a problem to take existing APS sized sensors (currently in the 6mp range with 8um pixels) and quadruple their pixel counts, to the 24mp range. The only problem is that the rest of the silicon in the camera hasn’t caught up with that pixel count yet. Without quadrupling the speed of the camera’s processor, you’d be looking at one picture every 2 seconds, instead of the 2-3 pictures/second rates of today’s entry level DSLRs. And you’d be looking at 25 shots on a 1 gig flash card, instead o
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