Todd Stanley wrote:
> Not as bad as it sounds, that's 72,000 seconds. Say it takes on average 1
> sec to focus (pretty conservatice I say), that's 72,000 focusing's, or
> 2,000 rolls of 36 exposure film - that means it will probably last longer
> than those cheap plastic things those lenses attach to :)
>
I would think 20 hour life to be a very short life span. A sports
photojournalist with the system in servo mode following the action could
probably burn out a motor in a season with that short an ultrasonic motor life
span. It would also severely reduce the value of a used lens with an
ultrasonic motor.
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