Numa DSLR o sensor deve durar uns 500 anos...
Ele só funciona na hora do disparo, diferente de uma filmadora ou
digicam não SLR, já shutter por ser mecânico tem desgaste.
Olha isto
http://www.nordicgroup.us/digicam/Shutter Rating (Cycles)
Camera shutters have finite lifetimes. Entry level and amateur cameras usually have ratings of around 50,000 cycles, prosumer models have ratings of up to 100,000 cycles, and professional models often have ratings up to 200,000 cycles. Don't laugh! It is entirely possible to reach these numbers over the life of the camera. Of course in most cases you'll be able to go longer than the rating, the camera doesn't instantly fail once you reach the rated shutter cycles, but it is something to look at if you're deciding between say a Nikon D100 or a Canon 20D, or between a Canon EOS-350D and a Canon 20D. Only Canon and Nikon actually disclose their shutter life cycle ratings, but you can pretty much be assured that the manufacturers that don't disclose their numbers, keep them secret for a reason.
http://www.dcresource.com/forums/archive/i...php/t-4836.htmlI have read that the Canon 1Ds has a shutter life of 150,000 cycles and the 1Ds Mark II has an estimated life of 200,000 cycles.
Shutter cycles of 1Ds Mark II & 1Ds:
http://www.bobatkins.com/photography/digit...Ds_mark_II.htmlThe Canon 20D supposidly has a shutter life of 100,000 cycles, whereas the Rebel XT (and I am assuming also the 300D) has a life of 50,000 cycles.
Shutter cycles of 20D and 350D:
http://www.bobatkins.com/photography/digit..._xt_vs_20d.html These ratings were not from canon directly however I am assuming they are accurate. I have also googled the Nikon D70 and supposidly the shutter life is 40,000 frames (taken off another forum)
