Well, yeah, but that's like saying that anti-shake could be added to
OM's if only they had a little bit of control :) My point was that the
mechanism that removes the dust is entirely unsuited for moving the
sensor in the way it would need to for anti-shake control. So they're
no closer to putting anti-shake in the camera than they would be
without the cleaning system.
Mark
On Mar 16, 2004, at 8:53 PM, Chuck Norcutt wrote:
> As I said, some control.
>
> Chuck Norcutt
>
> Mark Marr-Lyon wrote:
>
>> Yes, but it doesn't move it as a single unit. Ultrasonic means it's
>> moving at more than 20kHz, and probably more like a couple hundred
>> kilohertz if not higher. I would think that several wavelengths would
>> have to fit across the sensor/glass in order to be effective at moving
>> dust, so some parts of the glass are moving in the opposite direction
>> as other parts at any given time. I would also guess that it chirps
>> the driving frequency to avoid standing waves and the dust collecting
>> at the velocity nodes on the plate (Chladni patterns).
>>
>> To do anti-shake by moving the sensor, a much lower frequency and
>> larger amplitude motion system is needed.
The olympus mailinglist olympus@xxxxxxxxxx
To unsubscribe: mailto:olympus-request@xxxxxxxxxx?subject=unsubscribe
To contact the list admins: mailto:olympusadmins@xxxxxxxxxx?subject="Olympus
List Problem"
|