Panasonic Lumix G 20mm f/1.7 II ASPH : Specifications and Opinions

Panasonic Lumix G 20mm f/1.7 II ASPH

The Panasonic Lumix G 20mm f/1.7 II ASPH is a standard lens for 4/3, manufactured from 2013 to 2026 (discontinued). The focus is done by Lens AF motor (non-ultrasonic), it does not have image stabilization. The average price was 275 €;

38 users have given it an average vote of 9.1 out of 10.

MOUNT

This lens is available with the following mounts:

Micro 4/3: this lens is compatible with mirrorless micro-4/3.

Specifications
Focal lenght	20 mm
Angle of view	56.3° (equivalent to a 40mm in Fullframe 24x36mm format)
Format	4/3
Max. aperture	f/1.7
Aperture blades	7
Lenses/Groups	7 elements in 5 groups
Min. focus distance	0.20 meters
Reproduction ratio	0.13x
Features
Stabilization	No
Focus	Lens AF motor (non-ultrasonic)
Internal Focus	Yes
Built and notes
Tripod ring	No
Extenders	No
Filters	46 mm
Lens hood	Yes (not supplied)
Weather sealing	No
Weight	87 g
Dimensions	63 x 26 mm
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Reviews

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The following opinions have been automatically translated with Google Translate.

Gustyx85

sent on 17 Ottobre 2025

Pros: Sharpness - Good Bokeh - Compactness and lightness - Working AF tracking

Cons: AF Slowness

Opinion: I've only had this lens for a few days, but I've used it a lot because it's addictive... Combined with an Olympus PEN E-P7 the result is very compact, camera body and lens fit in a sweatpants pocket. The lens is very defined already at full aperture, soft and mellow bokeh, with a good progression of planes. The AF is slow, but absolutely acceptable, noisy, for me it is not a problem since I use it only in photography, AF tracking WORKS, even with face/eye recognition. Minimum focusing distance of 20 cm, I also like it for ambient portraits and close-ups, I have to test it well in landscape and street, but the premises are excellent. From the point of view of construction it is less plasticky than I expected, bayonet and barrel are made of metal, Made in Japan. Recommended purchase, a must buy faithful to the M4/3 philosophy.

Dottor Frank

sent on 26 Gennaio 2025

Pros: Size, lightness, versatility.

Cons: Speed ad. Addiction to always having it with you

Opinion: It is about the same size as a cap or adapter ring. Very sharp, it doesn't have a beautiful blur but that's what you expect from a 1.7. Low price. In the camera bodies the small size makes them compact. They fit in the pocket of the jacket or even the trousers if it has large pockets. Must have. The 20mm teaches you how to photograph. A step back x the reportage of the 17th. One ahead for the first portrait of the 25th.

Nicolab32

sent on 24 Ottobre 2023

Pros: Compact-sharp-bright

Cons: AF in video

Opinion: In my opinion, it's not good for videos. In manual focus yes, but in auto focus absolutely. Very slow and inaccurate. For photos it doesn't go AFC. In single-player mode it works well although slightly slow. I tested it on Panasonic GX80 E yes Olympus OMD EM10 Mark 4 Honestly there are no differences: It's fine on both bodies. Very sharp, bright and has a perfect focal length for street but you can also take portraits. Then the compactness on small bodies is the top.

Kwlit

sent on 04 Maggio 2023

Pros: All

Cons: Autofocus a little slower

Opinion: I own it together with the Summilux 25/1,4. They can coexist. The 20 has on its side the practicality: mounted on a GX9 is discreet and extremely portable. The difference in brightness is irrelevant in practical use and the "yield", the person responsible for the sleepless nights of the amateur photographer, is excellent in both I also have an excellent G9 machine that can certainly not be defined pocket and on this the summilux goes perfectly. The above when I want to play HC Bresson on duty... for everything else there is the Panaleica 12-60 zoom. I dare say that the choice of objectives rather than technical is philosophical. Returning to the 20mm I recommend the 'purchase. In the used car it is at prices that are too close to the price of the new: I would not pay even one euro more than the current 200, including any expenses. However, to be on the side of those who sell, it seems that they go away even more than 250 euros ... What can I say, happy with them...

Vincenzo f

sent on 03 Aprile 2023

Pros: Compact, really good image quality, great all-rounder for reportage

Cons: Autofocus not at its best, chromatic aberrations in backlight

Opinion: I had the first version that I resold when I bought the 25 1.2 olympus, but I discovered that in many situations I missed it, such as outings with two lenses only or reportage with only one fixed. I happened to have an opportunity for 160 euros I took the II version, the af has not improved and the aberrations are always the same, but the merits are all confirmed, I also recommend it as the only fixed for reportage to be coupled to the zoom, even in Ta has a very good yield. My judgment applies only to photography as I do not make videos and I can not tell you if it is indicated.

There are 13 more reviews. Show all »

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Panasonic Lumix G 20mm f/1.7 II ASPH : Specifications and Opinions

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Photos taken with Panasonic Lumix G 20mm f/1.7 II ASPH