Pentax SR explained.

Started Sep 29, 2009 | Discussions thread
Gmbal Regular Member • Posts: 274
Re: Pentax SR explained.

Martin Schou wrote:

As for the sensor's maximum speed when being pulled around by electromagnetic force, I would think the switching speed of relays may give a clue, they are typically 9ms having looked up several small ones specifications, so it's 1/110sec to move a couple of mm.

You cannot compare with relays, the motors used are of voice coil type, very similar to those used in HD-drives to move the little arm back and forth. They can be pretty quick, it's only a matter of power and mass.

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