The MS Optics 28mm f2 Pancake lens offering is a lens that should be permanently glued to a Leica CL if you have one. Now, don’t go doing that for real now, but more to the point this is a lens that really should be glued on. Why? It’s incredibly small. TheMS Optics 28mm f2 is pretty literally one of the smallest lens offerings for the Leica M mount with perhaps only Lomography’s Minitar 32mm f2.8 lens rivaling it. In fact, both of those lenses have unique image qualities to them as well as drastically different price points. Their operation is really quite similar though due to their being this small.