I just bought the Lumix 35-100/2.8 lens. It focuses and zooms fine, but it makes a tiny weird sound all the time, even when not focusing. I have turned the stabilisation system off and switched to manual focus mode to make sure the lens shouldn’t make any sounds, and still I can hear it. I have also tried the lens on a different camera body, the sound is still there.
It’s not the back-and-forth “woosh” sound of the focus motor, more like constant chirping. It’s very quiet, I have to have my head close to the lens to hear it, but it’s clearly there. It’s hard to record such a quiet sound, but here’s what I have managed to record (amplified).
Is the lens supposed to make such a constant sound when not focusing, with the image stabilisation turned off? All my other lenses are completely quiet when not focusing.