I recently posted a bug report to Apple, outlining that the new Sigma 18-35mm f/1.8 lens is displayed as Sigma 18-50mm f/2.8-4.5 DC OS HSM in Aperture. Anyone else getting this? My bug submission was not marked as a duplicate with Apple, so my post was probably the first. I have not been able to rectify this using CorrectLensEXIF either.
The LUMIX S Series S1 and S1R have an optional battery grip, the BGS1. This is a tour and explanation of how to use it and what it can do!