Continuing with the theme of micro four thirds lenses, these are the four that I own.
Panasonic 12-32mm, f/3.5-f/5.6 G Vario - Dual IS, min focus 0.2m. This lens is supplied as the kit lens for the Panasonic GX80, physically very small, and is of a collapsable style design, extending in 3 sections, the build is all plastic but with a metal mount, optically the lens is fine, and I have been impressed with the image quality.
Panasonic 12-60mm, f/3.5-f/5.6 - Dual IS, min focus 0.2m. Supplied as the kit lens with the Panasonic G80, this is one big beautiful weighty lens, ideally suited to the Panasonic DSLR style cameras, the build quality is excellent, with a smooth zoom action, and providing excellent image quality.
Panasonic 45-150mm, f/4.0-f/5-6 G Vario - Dual IS, min focus 0.9m. A decent lens with good image quality.
Panasonic 100-300mm, f/4.0-f/5.6 G Vario - Not Dual IS compatible, min focus 1.5m. A big heavy lens, it balances well on the Panasonic G80 body, and can be handheld successfully, although it's best tripod mounted for additional stability. I've taken some beautiful images of Gannets, Puffins, and Razorbills at Bempton Cliffs with this, and whenever I visit a bird reserve, this will always be in the bag with the Panasonic G80.
Update: February 2017 Panasonic have introduced version II of the 45-150mm, 45-200mm, and the 100-300mm zoom lenses; all are dust, moisture proof, and all are now Dual IS compatible.
Note: Dual IS, is the stabilisation system adopted by Panasonic on their latest cameras, it combines in body camera stabilisation, with lens stabilisation. Some lenses may require firmware updates, full details can be found on the Panasonic support website.