I see that according to the Nikon's website, "the shutter of the D3S and D3X has been tested for 300,000 cycles".
At the same time, some professional photographers can make much more than one thousand shoots in one day (from several sources; alas I can't find any of those sources now), even if they don't shoot every day.
Does it mean that those people (or their company) spend six thousand dollars for a camera like D3X every two years? If yes, why there are no DSLRs with a higher number of shutter cycles?
Answer
No, it doesn't mean that people have to buy new cameras every few years (at least for the reason of failing camera shutters! ;-) ) Keep in mind that shutters can be completely replaced/refurbished for significantly less than the cost of an entirely new camera.
As is mentioned elsewhere, it's important also to remember that these numbers are simply statistical estimations of how long a shutter mechanism will last. It is possible that a shutter could fail at 100,000 cycles, or at 500,000 cycles. Nevertheless, when you consider the cost of a $250 repair that works out to between 0.0025 cents and 0.0005 cents per actuation depending on how many actuations you get out of your camera...
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