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Panasonic Lumix G 20mm/F1.7 Pancake Lens

by Panasonic
4.8 out of 5 stars  See all reviews (78 customer reviews)

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  • Compact and lightweight pancake lens with f/1.7 maximum aperture
  • 2 Aspherical elements for a superb optical performance
  • Multi-coated lens elements reduce ghosting and flare
  • Contrast AF system support
  • Circular aperture diaphragm and durable metal mount
  • Suitable for a wide variety of occasions with focal length of 40mm (35mm equivalent)
See more product details

Product details

  • Product Dimensions: 1,200 x 2,200 x 1,000 cm ; 100 g
  • Boxed-product Weight: 454 g
  • Item model number: LUMIX G 20mm Pancake Lens
  • Date first available at Amazon.co.uk: 9 Sep 2009
  • Average Customer Review: 4.8 out of 5 stars  See all reviews (78 customer reviews)

Product Description

Manufacturer's Description

The LUMIX G 20mm / F1.7 ASPH., is a compact interchangeable lens based on the Micro Four Thirds System standard. It features a bright maximum aperture of f1.7 allowing a shallow depth of field to separate your subject from the background for even more impressive photographs.

Comprising of 7 elements in 5 groups, the lens system also employs 2 aspherical lenses to minimize both distortion and chromatic aberrations, achieving a high corner to corner resolution.

The versatile focal length of 40mm (35mm camera equivalent) is suitable for a wide variety of occasions from daily snapshots including sceneries like sunsets and dimly lit indoor shots to the deliberately creative shots taking advantage of its beautiful depth of field capability.

When mounted on LUMIX G Micro System Cameras, the LUMIX G 20mm / F1.7 ASPH. allows use of the advanced contrast AF system which includes a Face Recognition function, for more convenient and enjoyable shooting.

Seven blades give the aperture a rounded shape that produces an attractively smooth effect in out-of-focus areas when shooting at larger aperture settings. The lens also features a durable metal mount and uses multi-coated lens elements that minimize ghosting and flare to further enhance its optical performance.

Box Contains

  • Lens
  • Lens Cap
  • Lens Rear Cap
  • Lens Storage Bag

  • Customer Questions & Answers

    Customer Reviews

    Most Helpful Customer Reviews
    58 of 61 people found the following review helpful
    5.0 out of 5 stars A little gem! 2 Aug 2010
    By Cheatin' Jockey VINE VOICE
    Verified Purchase
    This lens has been lauded in many reviews - it's probably *the* must-have lens for M43 camera users.

    I use it on my Olympus PEN E-P1 and my wife's Panasonic G2; on either camera it transforms the overall size making them both look and feel much smaller. Focus speed is OK, though I must say it seems a bit slower to focus on the G2 than the PEN for some reason - after the last firmware upgrade the PEN has got much snappier in this respect.

    In use the 20mm gives a 40mm equivalent on a traditional film SLR (or Full frame DSLR) which isn't quite standard lens length and the extra field of view can lead to distortions if used without care on portrait shots though it's not that wide for landscapes either! Having said that having a prime lens makes you think more about your shots and you'll get picture you just wouldn't with a lazy old zoom.

    One of the top benefits of this lens is the super wide (for M43!) 1.7 aperture. This Makes it good for low light photography and in some conditions enables you to get a nice blurry background. This is especially nice on the PEN as it has in camera stabilisation, there is no OIS on the Lumix 20mm. Chromatic aberrations isn't an issue on the PEN and the G2 removes any it finds it automatically, so zoom users that get annoyed with purple fringing will be happy too.

    So, this is a compact lens that is pin-sharp and great for low-light pics and makes some M43 cameras almost pocketable. Five stars without question.
    Was this review helpful to you?
    33 of 35 people found the following review helpful
    By S. Kay
    Bought this after reading lots of reviews to go with my Olympus E-P1 Pen - which I bought with the standard kit zoom lens. Main motivation was since the E-P1 has no built in flash, I wanted a fast lens for indoors photography. It was pricey, and at first (using the kits lens) I thought I had bought something non-essential, and expensive non-essential at that...

    However, the Panasonic lens is lovely - simple, fast, small, great quality. Works a treat indoors, I have yet to use my Olympus flash for real. I actually like having the fixed focal length... My preferred lens of the two, even though of course the Olympus kit zoom lens is more versatile with the 14mm-42mm zoom.
    Was this review helpful to you?
    15 of 16 people found the following review helpful
    5.0 out of 5 stars My best lens...it's fantastic 21 April 2011
    If you have a m4/3 system camera, this is a 'must buy'. I use it more than any other lens (and I have most of the m4/3 lenses) on my Panasonic G1 and Olympus EPL2. It is particularly good for photos of family and babies etc as when used at its fast F1.7 aperture it throws the distractions of background out of focus and its very sharp definition makes the main subject stand out in an almost 3D way at times. It is also very small and light so good for when you want minimum bulk e.g. if out on a bike. It is almost permanently on my EPL2 and the kit lens that came with the camera has hardly been used.
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    41 of 45 people found the following review helpful
    4.0 out of 5 stars Great ! Should be on your short list 3 May 2012
    Verified Purchase
    This used to be THE lens to get to accompany a micro four thirds camera body. Why? It is "fast" - at f1.7 it offers opportunities for low light shooting and some degree of shallow depth of field shots, though not as much of the latter as a lens such as the Oly 45mm or Oly 75mm. It is also legendary because of its low price yet biting sharpness/resolution, and diminutive size. It is better than the Olympus 17mm 'pancake' lens and sharper and smaller than the micro four thirds kit lenses (though the new 14-42x from Panasonic is a small, collapsing design). This 20mm lens does not feature a collapsible design but it is very small. It is light in weight but of solid construction. In terms of performance, optically, it is stellar - very sharp wide open in the centre and when stopped down just a tad, very sharp in the corners as well. This lens plus a m 4/3 body gives you the resolution of Canon L glass or Nikon G glass - enough said? It does have some distortion, but this is corrected automatically in Panasonic cameras and in raw when using Adobe products such as ACR or Lightroom. It provides a 40mm in terms of the old 35mm equivalence, which makes it, I guess, a slight wide angle lens or approaching the so-called 'normal' focal length of 50mm 35mm equivalent. In use, looking through the viewfinder of a G3 or GX1, you feel as if you are using a wide angle to an extent. Watch out when using this as a portrait lens - it's great for so-called environmental portraits where you include elements of the surroundings but if you get too close to your subject you will find their facial features being distorted. I think this lens is excellent for street photography, especially low light work. Read more ›
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    20 of 22 people found the following review helpful
    5.0 out of 5 stars Panasonic Lumix G 20mm f1.7 Pancake Lens 29 Aug 2010
    By mac_no1
    Verified Purchase
    I bought this lens after reading many reviews all of which could say nothing bad about it, except perhaps the rather high price. I have paired the lens onto a Panasonic Lumix G2 which is a superb combination. A lot of reviews have the lens paired with a Panasonic Lumix GF1 so it was a bit of a gamble on my part when using it with the G2. I was not disappointed in the slightest, the image quality is excellent, sharp, great colour and contrast. Build quality is good, a metal mount with plastic outer casing, comes with front and rear lens caps, case but no lens hood. I bought a suitable lens hood from a company called Keene on Ebay which is cheap and light weight so won't affect the mechanics of the lens (the lens does move in and out when focusing).

    It takes some getting used to, working with a fixed focal length lens but this seems a great choice for general street photography, especially in low light. I can carry it around with my 14-140mm lens and have a great combination without all the bulk and weight of my rather heavy Canon 7D plus 17-55 lens. The Panasonic combination also takes photos that are certainly on a par with the Canon, image quality wise, given good lighting conditions. And with the 20mm F1.7 lens it certainly holds its own very well.

    My only complaint about this lens like so many other purchasers is the price, at around 300 it is a lot of money. But now having spent that money I'm more than happy with the lens.
    Was this review helpful to you?
    Most Recent Customer Reviews
    5.0 out of 5 stars Fantastic partner for my GX1
    I'm not a particularly serious photographer by any means but I love to get out and about with the camera when I get chance. Read more
    Published 1 month ago by PNH
    4.0 out of 5 stars Small, superb image quality but could be a little bit better.
    I love its compact size, fast aperture and great overall image quality. I shoot this lens wide open at f/1.7 90% of the time and it's razor sharp. Read more
    Published 2 months ago by Green Goddess
    5.0 out of 5 stars One of my best purchases for anything.
    Bought this lens somewhere around 2 years ago for my Olympus EPL3. Only thought of reviewing it because only now have I had any desire to buy another lens. Read more
    Published 2 months ago by Edward Henry
    5.0 out of 5 stars Bought this for an Olympus PL5 camera.
    I baought this lens to use it on my Olympus PL5 camera, and up to now I have been very satisfied. It gives sharp and crisp images, and I beleive it is better than the kit lens (... Read more
    Published 7 months ago by Peter
    5.0 out of 5 stars The brightest and best
    A really fast and bright lens that works well in all conditions. I have been amazed at some of the images it has produced. Expensive but well worth every penny.
    Published 8 months ago by M. Dear
    5.0 out of 5 stars Something more than good value
    Most of the beginners will buy that lens because... it is recomended as a "must have" on many forums. Read more
    Published 8 months ago by Lukas
    5.0 out of 5 stars Wow
    I know that it cost more than my new GF5 but I believe I will be using it more than the lens provided. Read more
    Published 8 months ago by xopherjlee
    5.0 out of 5 stars Good alrounder.
    I bought this for my Olympus OM-D.
    It is not exactly the fastest focusing lens but it serves my needs. Read more
    Published 10 months ago by K. Taylor
    5.0 out of 5 stars A brilliant lens!
    Spent a lot of time looking for a quality bright fixed prime lens to fit an Olympus mini pen.

    Pros: Compact and light
    Pros: Very bright and good quality photos... Read more
    Published 10 months ago by g-review
    5.0 out of 5 stars Excellent lens for low light use
    The other reviews for this lens encouraged me to get it, despite the price. I have a Panasonic Lumix G2 and it fits the camera well. Read more
    Published 11 months ago by D.Fulford
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