... Correct me if I'm wrong, but I think the AF
works just like a car transmission or a prop shaft. If you add couplings,
there will be a loss in power reaching its end.
You're wrong!
Ken Waller
----- Original Message -----
From: Eduardo Carone Costa J�nior <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, April 19, 2001 10:32 PM
Subject: Re: OT: autofocus motor
> Todd wrote:
> >
> > I would think so. I would also think that motors in the camera may fail
> > sooner if large heavy lenses are used a lot, as then the likely
> > underpowered motor will have to work harder, trying to do the job of a
> > larger motor.
> >
> > Todd
>
> That's exactly what I think about it.
> Do you know anything concerning Pentax AF motors? I mean, if they can be
> considered rugged enough to stand some larger lenses. Have you heard of
any
> AF motor failure that can be attributed to the extensive use of large
> lenses?
> I can't help but think that, despite being used all the time, unlike AF
> motors mounted directly into lenses, the body mounted AF motor can benefit
> from a larger physical space provided by the body itself.
> Another point is the use of teleconverters and extension tubes that are AF
> compatible. Due to the adding of couplings, the stress on the motor would
> also be increased. Do you agree? Correct me if I'm wrong, but I think the
AF
> works just like a car transmission or a prop shaft. If you add couplings,
> there will be a loss in power reaching its end.
>
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