The Lumix G 20mm/F1.7 ASPH, a compact and lightweight “pancake” lens, is dramatically compact and lightweight, featuring an outstanding F1.7 brightness which allows consumers to create stunning photos with beautiful, soft focus. Comprised of seven lenses arranged in five groups, the Lumix G 20mm lens actually uses two aspherical lenses to effectively minimize distortion and achieve super high resolution. The versatile 20mm focal length (equivalent to 40mm on a 35mm film camera) is suitable for all applications–from scenery shots to dimly-lit indoor environments.
When mounted on Lumix G Micro System Cameras, the Lumix G 20mm/F1.7 ASPH lens allows for use of the advanced contrast Auto Focus (AF) system, which includes Panasonic’s Face Recognition functions. It’s comprised of seven blades, which produce an attractive and smooth background blur effect when shooting at larger aperture settings. The lens also features a highly-reliable metal mount, and use multi-coated lens elements to minimize glare and further enhance optical performance.
Product Description
Panasonic H-H020 20 mm f/1.7 Wide Angle Lens for Micro Four Thirds H-H020 Lenses & Filters
Panasonic LUMIX G 20mm f/1.7 Aspherical Pancake Lens Reviews from Satisfied Users:
I recently purchased an E-P2 as a portable option to complement my DSLR setup. I’ve been very happy with its performance in most respects, however it has no flash and the kit lens is slow; this means that indoor usage results in painfully high ISO and noise that is impossible to clean. That lead me to purchase this lens, which is the fastest thing going for M4/3 currently.
First off, this thing is wonderfully compact. Much thinner than the M.Zuiko 14-42mm kit lens, although a bit bigger in diameter, and it makes the E-P2 even more low profile when it’s mounted. It balances well on the E-P2 and it looks right at home to me, even though it lacks the signature PEN silver accents. It has a massive manual focus ring which is a pleasure to use (once you get the hang of the micromotor manual focus mechanism, which it shares with the 14-42).
Unlike the newer, smaller Panasonic Lumix 14mm f/2.5 pancake, this guy has some very large lens caps that make it more bulky than it should be. A lens this size begs to be slipped into a pocket, but the huge caps just get in the way; you might want to look for aftermarket replacements.
As for IQ… well, you can read the charts, but suffice it to say that this is a very good performer. Unlike the M.Zuiko kit lens, this guy is sharp wide open, with perhaps only minor improvements by stopping down. This lens can really show what M4/3 is capable of from an IQ perspective in a way that the kit zooms just can’t.
Autofocus is at least as accurate as any other lens I’ve tried on this body, and low light AF accuracy especially is quite good (thanks, no doubt, to the large aperture). AF speed though is mediocre at best, and it’s also a good bit louder than would be ideal. The aperture also makes a very noticeable clicking sound, which is a little obnoxious with the E-P2 (which constantly fiddles with the aperture when you’re using live view). Neither focus noise nor aperture noise is a real issue for stills, but they might cause some problems if shooting video with the internal mic.
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