Panasonic Leica DG Summilux 15mm F1.7 ASPH
A very small and extremely sharp wide angle lens.
Panasonic Lumix G 25mm F1.7 ASPH
Ridiculously lightweight and fantastically sharp standard lens.
Panasonic Lumix G Vario HD 14-140mm F4-5.8 OIS
A decent quality superzoom lens intended for videography.
Rokinon 7.5mm F3.5 UMC Fisheye CS
A very small and reasonably sharp fisheye lens.