Quote Originally Posted by peety3
I'm no direct expert, but gyros are a moving part, so they can make noise.

Quote Originally Posted by Keith B
I'm not an expert either, but a properly balanced and functioning gyro wouldn't make a noise that we could hear, but I could see a faulty gyro making noise.

I'm not a Daniel Browning clone, either[]... Nonetheless, to the best of my knowledge, gyros used in Canon image stabilizers are not much different from those present in several other devices including iPhones, Wii controllers and some laptops, just to mention a few of them. Basically, they are microaccelerometers. Canon defines them vibration gyro (angular velocity sensor) and acceleration sensor to indicate, respectively, the gyro implemented in the conventional image stabilizer to compensate for angle camera shake and the one added to the new hybrid IS which compensates for shift camera shake. There are no spinning parts in such gyros, the Canon technology is based on murata-type prismatic beam gyro (have a look here) and therefore, faulty or not, they can never produce even the faintest noise.


@Scott: hope you managed to have your 24-105 fixed the soonest... btw, apart from the impossible-to-switch-off groaning, whatever the cause, does it work despite the noise?


Pier