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RF 85mm f2 macro lens idle noise

Started Dec 23, 2020 | Questions thread
R2D2 Forum Pro • Posts: 26,536
Re: RF 85mm f2 macro lens idle noise

thunder storm wrote:

R2D2 wrote:

Completely normal. The IS is always “spun up.”

R2

I wonder what's actually happening when you have it turned off. I mean, if it never is off, why is there a switch?

The switch is there so you can decide when to activate the IS, otherwise with these newer IS systems it seems to idle like an automobile engine.  The switch is like your gas pedal.  

I have seen a theory that the switch also parks the lens (when switched off).

R2

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