Panasonic Lumix DG Summilux 15mm f1.7 Aspherical enlarging 8 MC is a large

8 MC is a large

and this way no one can unzip your pack and run off with your goodies while it's on your back

Leitz GGr (green) filter for many Summilux lenses and others with a 39mm filter thread

I would say

with excellent image quality and macro capabilities to 1:2

Panasonic Lumix DG Summilux 15mm f1.7 Aspherical enlarging 8 MC is a largeThis Panasonic Lumix DG Summilux 15mm f1. 7 Aspherical is a Leica branded lens designed for Micro Four Thirds cameras. It's tiny, and the effective 30mm ish focal length makes it an ideal everyday wide angle. It has a smooth manual focusing ring and a click stopped aperture control, too. Includes lens cap and original hood, with its very own lenscap.