it does if you want to save batteries and use it only when needed, also, normally draws power from the camera body. otherwise, the lens need batteries.
Herb... ----- Original Message ----- From: "T Rittenhouse" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Sunday, July 06, 2003 15:03 Subject: Re: Image stabilizers on Pentax > Is there any reason, really, why image stablization needs to communicate > with the camera? I would think the whole thing could be built into the lens, > the camera doesn't need to know that some of the lens elements are moving to > compensate for vibration.
