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Panasonic G 20 mm f/1.7 ASPH.

Pictures:
Specifications:
Manufacturer Panasonic
Model G 20 mm f/1.7 ASPH.
Lens style Wide angle
Focal length 20 mm
Maximum aperture f/1.7
Angle of view 57 o
Closest focusing distance 0.2 m
Maximum magnification 1:7.5
Minimum aperture 16
Number of diaphragm blades 7
Auto focus type AF
Lens Construction 7 elements / 5 groups
Filter diameter 46 mm
Macro No
Available mounts Micro Four Thirds
Dimensions 63 x 25.5 mm
Weight 100 g
Additional information 2 aspherical elements
Average rating (8 owners reviews)
Build quality
Optical quality
Value for money

Overall

4.42 Good
Owners reviews (8)
  1. maxsi
    maxsi 19 January 2023, 18:37
    Build quality
    Optical quality
    Value for money

    Overall

    IP 92.40.x.x
    Owner since: 7 years
    Price:
    User profile: Semipro

    Cons: - needs to be stopped down to f/4 - f/5.6 to bring the corners on par with the center - AF is a bit slow and noisy compared to more modern lenses

    Pros: + a m4/3 gem that shows the advantages of the format, great optical quality for a lens this size and price, even on 20 Megapixels bodies + super compact and light, decent build for the size + very useful focal length

    Summary: it\'s not the most recent lens design but it still holds very well

  2. zavinac
    zavinac 12 October 2016, 09:49
    Build quality
    Optical quality
    Value for money

    Overall

    IP 91.213.x.x
    Owner since: 2 years
    Price: 240
    User profile: Amateur

    Cons: busy (poor) bokeh

    Pros: good optical quality, small size, great match for smaller m43 cameras

    Summary: This is a good lens and I was using it as a _walk-around_ lens, but the bokeh was not very pleasant so I switched to Olympus 25mm f/1.8 instead.

  3. yesorNo
    yesorNo 16 July 2012, 14:14
    Build quality
    Optical quality
    Value for money

    Overall

    IP 62.168.x.x
    Owner since: 2 years
    Price: 400
    User profile: Semipro

    Cons: cheap small opt. quality

    Pros: slow AF, plastic body

    Summary: better than pl 25/1.4

  4. matadoerle
    matadoerle 12 April 2012, 17:22
    Build quality
    Optical quality
    Value for money

    Overall

    IP 134.3.x.x
    Owner since: 3 years
    Price: sold secon
    User profile: Amateur

    Cons: no lens hood included in shipping

    Pros: light but well build, fast, very sharp and acceptable fast autofocus, just no flares

    Summary: This is a lens for every day use, highly recommended

  5. dcisive
    dcisive 23 July 2011, 06:49
    Build quality
    Optical quality
    Value for money

    Overall

    IP 71.32.x.x
    Owner since: 1 year
    Price: 379
    User profile: Professional

    Cons: Slight CA Issues Soft Corners unless stopped down a ways Not silent for video

    Pros: Super sharp in the center from wide open on The corners come around by f2.8 Great color rendition Instant focus on the newer Panny bodies.

    Summary: This is one of the "No Brainer" lenses if you own a Micro 4/3rd system. A virtual MUST HAVE for portraits and lower light shooting. The svelte size and weight make this the go to street lens as well.

  6. Zulu
    Zulu 15 June 2011, 17:49
    Build quality
    Optical quality
    Value for money

    Overall

    IP 132.68.x.x
    Owner since: 1 year
    Price: $400
    User profile: Amateur

    Cons: Noisy AF motor

    Pros: Superb optical quality, extremely useful lens in any situation, but especially indoors and in low light.

    Summary: Essential lens for any m43 user

  7. bamby
    bamby 27 January 2011, 01:14
    Build quality
    Optical quality
    Value for money

    Overall

    IP 82.181.x.x
    Owner since: 3 months
    Price: kit
    User profile: Amateur

    Cons: The lens changes length when it focuses. I fear for its sturdiness compared to fixed length ones.

    Pros: Good brightness, image quality

    Summary: Rocks!

  8. Michael Shea
    Michael Shea 17 January 2011, 20:41
    Build quality
    Optical quality
    Value for money

    Overall

    IP 82.34.x.x
    Owner since: 3 months
    Price: £240
    User profile: Amateur

    Cons: A bit over-priced perhaps, but otherwise none.

    Pros: Fast, extremely sharp and bright with good colour rendition. One of the few stand out lenses I've tried that because of it's compact size and quality fully justifies the choice of the M43 system. Hopefully this will set the standard for others to follow.

    Summary: Virtually every review I'd read before buying this lens was highly favourable and I must agree. Not an essential purchase if like me your photography is mostly outdoors in reasonable light, but a valuable addition in any case. Very few of these lenses become available second-hand and with good reason.