I’ve been looking for a wider prime for landscape and astrophotography to use with my GM5. Originally I was leaning toward the PL15 but I don’t think it’s wide enough. I’ve been shooting a lot lately with my kit 12-32 at 12mm and I really enjoy the 24mm equivalent FOV. I prefer a really light kit (under 1#) for backpacking in the summer. Oly 12mm f/2 Pros: 24mm equivalent that I’m looking for, fast enough for astrophotography. Cons: Ridiculously expensive Panasonic 14 f/2.5 Pros: Cheap, very small, relatively sharp. Could possibly get the 11mm adapter? Cons: Might be a hair too slow for astro and for handheld low light, not sure if I’ll be happy with 14mm FOV Panasonic/Leica 15 f/1.7 Pros: Would fit on the GM5 perfectly, aperture dial for added physical control on the GM5 Cons: Expensive, 15mm is a big difference compared to 12mm imo, narrow FOV for astro. maybe too close to my 20mm Other options: Rokinon 12 f2: cheap, but the GM5 would be locked on e-shutter which has a 1 sec restriction on SS. Wouldn’t work for astro. Panasonic 12-32: this lens is really starting to win me over and I already own it. Just keep it, save money and space, and forget about astro photos?