Four years ago Panasonic presents their large (F1.7) aperture "pancake" 20mm (40mm equivalent) lens as the kit lens for the Lumix DMC-GF1 camera.
Shortly after, M43 photographers discovered the "beauties" of this compact prime lens...
The 40mm-equivalent may at first appear unusual, but some discovered that; with a focal length equal to the M43 sensor's diagonal; this compact optics is in fact a 'perfect normal' lens!
This means the 20mm will produce images free of the 'perspective distortion' associated with wide angle or telephoto lenses!
Shortly after launch, this "pancake" lens became a celebrity when photo blogger Steve Huff claimed that the lowly kit lens is sharper than a Nikon 50/1.8 on a D3S!
Suddenly, this small wonder was so hot, it was hard to come by!