The market for computer microprocessors in particular follows the Moore’s Law which provides for the doubling of benefits and the number of transistors every 18 months.

Unfortunately, even if it would be nice to continue to grow indefinitely, there are physical limits that sooner or later complicate the issue and will require roads to find alternavite and photography may not be very far from this limit for digital sensors. Nikon has returned to FX format because of the noise that had appeared in DX format to ISO senior and probably the next D3X will be even more noisy. Virtually doubling the megapixel you can expect the loss of an ISO stop.

For this reason sports photographers hardly feel the need to change their D3 for a while ‘time. If, or rather when, comes a reflex from 160 megapixels will probably only of interest to photographers naturalists.