Summary: After 25 mm Oly that I recommend to all I was looking for something more wide and I took the Oly 12 mm, but it is too wide. Having sold 25 and 12 I try the Pana 20 f 1.7. Sharpness and boken seem in line with the Oly 25 but focus speed and fluidity of the focus ring are not acceptable when used in...
Pros: Perhaps the size
Cons: Focus speed and fluidity of the focus ring when used in manual
Panasonic 20mm f/1.7 ASPH LUMIX G review by attila_feher
8 September 2014
Summary: It is probably one of the lenses that made the Micro-Four-Thirds system be what it promised to be: small and high quality. It is my lens of choice when I need a to make my Olympus EP3 fit in my coat's pocket. Pros: its focal length (40mm equiv. - a bit wider than the standard 50 mm equiv.
Pros: small and portable, wide aperture, good sharpness
Cons: a bit slow focusing, it hunts in very low light
Panasonic 20mm f/1.7 ASPH LUMIX G review by theelderkeynes
7 December 2013
Summary: It does what it says on the box! Turns my Oly E-P2 into a Leica basher! Put it on an E-P5 or E-M5 and it gets even better. Sharp and lovely tonal quality even shot direct into the sun over water.... Can't fault it.
Pros: Small, sharp, great IQ, makes a discrete package with an Olympus E-P2
Summary: Much has already been said about this lens online, so I'll just point out the more obscure things I've discovered using it: -The inner barrel does indeed move, and when parked at shut off the inner barrel pull juuust slightly inside the outer barrel. It is not flush.
Summary: if 40mm field of view is your thing, you've got nowhere else to go in the M4/3 system. optically, i had to just 'get over' the whole distortion and CA auto correction issue. so i did good god this thing is sharp.
Pros: light, tiny, optically superb
Cons: corner shading up till f4 not great but easily adjusted out. bad CA under certain conditions too (but dxo nukes them)
Panasonic 20mm f/1.7 ASPH LUMIX G review by Prime Minister
Prime Minister, slrgear.com
16 March 2012
Summary: For the small pancake that it is, this lens is an excellent performer. Apart from the somewhat slow autofocus and the loose, moving front element, there's nothing I don't like about this lens. Images are sharp and crispy and they have good contrast. The autofocus is slowish but accurate.
Pros: Lightweight, small, fast aperture, sharp, good contrast
Panasonic 20mm f/1.7 ASPH LUMIX G review by Ranger
16 February 2012
Summary: I've put this lens through some heavy use for the past two years with a GF1 and more recently a GX1. It is my most used M4/3 lens. My experience has shown it to be a rugged reliable lens. Image quality overall is excellent. It is a primary player in my street photography projects.
Panasonic 20mm f/1.7 ASPH LUMIX G review by naveedakhtar
8 December 2011
Summary: Considering this is the focal length am using most out of 14-42 mm range, this lens is very practical for me. I gave my kit lens on this one and am keeping this lens since it was released and used it extensively. Many times only this lens in my camera bag.
Pros: Sharp, low CA, small, fast, price, bright, build