Lumix 20mm f/1.7, version I vs II

A comparison of the focus speed, focus noise and aperture noise from the Lumix G 20mm f/1.7 versions one and two. The focus speed is very similar between the lenses. The difference I found is most likely not significant, it could be just due to random differences in the testing parameters. So my conclusion is: The lenses have exactly the same focus motor/assembly. The focus noise, though, shows a significant difference. Both lenses are still noisy, by modern standards, but the new one less so than the old lens. Perhaps this is due to the use of different materials in some components. Whatever the cause, this is good news: Focus noise is less likely to be a problem with the new lens. The aperture change noise shows some difference in my measuring, but I would say it&hardly significant. This noise is on a quite normal level for Micro Four Thirds prime lenses. Zoom lenses tend to be less noisy, as they have smaller apertures.