Panasonic H-H020 Lumix 20mm f/1.7 Pancake LensCapture Stunning Images with a Compact Pancake Lens The Panasonic Lumix G H H020 20mm f 1. 7 Aspherical Pancake Lens is a versatile and compact lens for Micro Four Thirds cameras. Its fast f 1. 7 aperture allows for beautiful soft focus and excellent performance in low light conditions. Focal Length: 20mm (40mm equivalent on Micro Four Thirds) Maximum Aperture: f 1. 7 Minimum Aperture: f 16 Filter Size: 46mm Mount: Micro Four Thirds