Shel Belinkoff mused:
> 
> The istD has a bit depth of 12.  I seem to recall some DSLR with a bit
> depth of 14 ... maybe.  The specs on the new Hasselblad claim a bit depth
> of 16.  Why is it that so many DSLR cameras are using a bit depth of 12? 
> Is there a physical or design reason?  Cost?  My little Nikon scanner has a
> bit depth of 16 ... why not a DSLR?
> 
> Shel 

Don't forget that your scanner only has a single row of sensors, not a
two-dimensional array, and that it only has to work at a single speed.

Of the two, the fact that it's only a linear sensor is more important.
You can put the extra processing elements, etc., alongside the sensor
without having to worry too much how much room they take up.  In a 2D
sensor you're trying to put another row of pixels there.

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