I read in one of the forums someone was mentioning that it's difficult to find a second hand camera (5dmkII) that hasn't been fired for less than 20,000 shots (or something to that effect).
Does it matter how many shots a camera has been fired? Something like the mileage of a second hand car?
Does it mean that there is an actual finite number of exposures a camera can take before it starts to fail? All along I thought cameras can last a long time with no major problems, at least not one that is related to the number of exposures.
Would appreciate all your advice.