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Panasonic Lumix G H-H020 20mm f/1.7 Aspherical Pancake Lens for Micro Four Thirds Interchangeable Digital SLR Cameras

4.6 out of 5 stars 301 customer reviews
| 42 answered questions

Available from these sellers.

DPReview Gold Award
From the experts at DPReview
Overall score: 89%
See review summary and sample images
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Digital Photography Review is the most popular dedicated enthusiast digital photography site on the Internet. Our authoritative reviews have earned us the trust of photographers and camera buyers all over the world, for more than 15 years.

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  • 20mm focal length
  • 40mm equivalent focal length on Micro Four Thirds cameras
  • F1.7 maximum aperture; F16 minimum
  • 46mm filters
  • 0.20m/7.87" minimum focus
  • Micro Four Thirds mount for Micro Four Thirds interchangeable lens cameras
1 new from $583.13 25 used from $199.99

Technical Details


Review summary from DPReview

DPReview Gold Award September 2009
The 20mm F1.7 offers impressive image quality and low-light capability in a package significantly smaller and more discreet than any DSLR system.
Andy Westlake Andy Westlake
89%

Conclusion

The 20mm F1.7 is an excellent lens, especially considering its tiny size. It does well in all aspects of our studio tests, and produces fine images in a wide range of situations while also focusing quickly, silently and decisively. On compact Micro Four Thirds bodies it offers impressive image quality and low-light capability in a package significantly smaller and more discreet than any DSLR system.

Reasons to buy

  • Extremely small size and lightweight
  • Fast maximum aperture
  • Impressive image quality at all apertures
  • Good build quality, with manual focus ring and non-rotating front element

Things to consider

  • Comparatively expensive
  • No lens hood

Suggested for

Everyday use on compact Micro Four Thirds bodies, where is small size and excellent optical performance make an appealing package

Not suggested for

It's not the most versatile lens in the world, but overall there's little to criticize.
Poor Excellent
Build quality
Ergonomics & handling
Features
Image Quality
Value
Scoring is relative only to the other products in the same category.
DPReview is the world’s most popular dedicated enthusiast digital photography website. Since 1998 its mission has remained unchanged: to deliver the best reviews of cameras and lenses anywhere on the Internet, and help you find the right gear for your needs.

Product Description

Product Description


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.

From the Manufacturer


Panasonic H-H020 LUMIX G 20mm f/1.7 Aspherical Pancake Lens for Micro Four Thirds Interchangeable Lens Cameras


Photography Pros, Meet A Compact Pancake Lens with Outstanding Brightness

The LUMIX G 20 mm / F1.7 ASPH features a dramatic compactness and light weight despite its F1.7 brightness allowing a beautiful soft focus for photos to be even more impressive. The versatile 20 mm of focal distance (Equivalent to 40 mm on a 35 mm film camera) is suitable for wide variety of occasions, from daily snapshots including scenery like sunsets and dimly lit indoor shots to the deliberately creative shots taking advantage of its beautiful soft focus. When the lens is mounted on the LUMIX G Micro System Cameras, the LUMIX G 20 mm / F1.7 ASPH allows use of the advanced contrast AF system, which includes a Face Recognition function, for more convenient, more enjoyable shooting. The LUMIX G 20mm / F1.7 ASPH utilizes a lens drive system to realize a compact and bright F1.7 lens. As a result, sound and vibration may occur during focus operation, but this is not a malfunction.

Compact, Reliable and Light Weight

The H-H020 pancake lens is comprised of seven elements in five groups. 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 Circular aperture diaphragm. The LUMIX G 20 mm / F1.7 ASPH camera lens also features a highly reliable metal mount.

Minimized Distortion

The new interchangeable lens system uses two aspherical lenses most effectively to minimize both distortion and chromatic aberrations, achieving super high resolution corner to corner, and uses multi-coated lens elements that minimize ghosts and flare to further enhance its optical performance.

Lens Compatible with All Panasonic LUMIX G Series and Micro 4/3 Cameras
DMC-GH3K Body OnlyDMC-GH3K Body
Panasonic LUMIX DMC-GH3 16.05 MP Digital Single Lens Mirrorless Camera with 3-Inch OLED
DMC-G5K Body OnlyDMC-G5K Body Only
Panasonic LUMIX DMC-G5 16 MP Digital Single Lens Mirrorless Camera with 3-Inch LCD
DMC-GH2K Body OnlyDMC-GH2K Body Only
Panasonic LUMIX DMC-GH2 16.05 MP Live MOS Interchangeable Lens Camera
DMC-GX1KKDMC-GX1KK
Panasonic LUMIX DMC-GX1 16 MP Micro 4/3 Compact System Camera with 3-Inch LCD Touch Screen; Black, 14-42mm Kit

DMC-G3KW, DMC-G3KBODY, DMC-G3KK, DMC-GH2HK, DMC-GX1KBODY, DMC-GX1SBODY,DMC-GX1XK,DMC-GX1KS,DMC-GX1XS,DMC-GF5XR,DMC-GF5XK,DMC-GF5XW,DMC-GF5KW,DMC-GF5KK,DMC-GF5KR,DMC-GF3CT,DMC-GF3KR,DMC-GF3KBODY,DMC-GF3XK,DMC-GF3CR,DMC-GF3KW,DMC-GF3KT,DMC-GF3CWDMC-GF3CK,DMC-GF3KK,DMC-GF2CS,DMC-GF2KK,DMC-GF2CK,DMC-GF2CW,DMC-GF2KS,DMC-GF2CR


Lens Comparison Chart
Lens Construction
18 elements in 13 groups (2 ED lenses,1 UED lens)
14 elements in 9 groups (4 aspherical lenses, 1 UED lens, 1 UHR lens)
15 elements in 11 groups (4 aspherical Lenses, 1 ED Lens)
17 elements in 13 groups (4 aspherical lenses, 2 ED lenses)
7 elements in 5 groups (2 aspherical lenses)
Nano Surface Coating
Yes
Yes
n/a
No (Multi-coated)
No (Multi-coated)
Mount
Micro Four Thirds Mount
Micro Four Thirds Mount
Full Four Thirds Mount
Micro Four Thirds Mount
Micro Four Thirds Mount
Optical Image Stabilizer
POWER O.I.S.
POWER O.I.S.
MEGA O.I.S.
MEGA O.I.S.
No
Focal Length
f=35-100mm (35mm camera equivalent 70-200mm)
f=12-35mm (35mm camera equivalent 24-70mm)
f=14-150mm (35mm camera equivalent 28-300mm)
f=14-140mm (35mm camera equivalent 28-280mm)
f=20mm (35mm camera equivalent 40mm)
Aperture Type
7 Diaphragm blades / Circular aperture diaphragm
7 Diaphragm blades / Circular aperture diaphragm
7 Diaphragm blades / Circular aperture diaphragm
7 Diaphragm blades / Circular aperture diaphragm
7 Diaphragm blades / Circular aperture diaphragm
Maximum Aperture
F2.8
F2.8
F3.5-5.6
F4.0-5.8
F1.7
Minimum Aperture
F22
F22
F22
F22
F16
Closest Focusing Distance
0.85m / 2.8 ft
0.25m / 0.82 ft
0.50m / 19.7 in at all Focal Lengths
0.50m / 1.64 ft at all focal lengths
0.2m / 0.66 ft
Diagonal Angle of View
34°(W) to 12°(T)
84°(W) to 34°(T)
75°(W) ~ 8.2°(T)
75°(W) ~ 8.8°(T)
57°
Filter Size
58mm / 2.3 in
58mm / 2.3 in
72mm
70mm / 2.76 in
46mm / 1.81 in
Max. Diameter
Approx. 67.4mm / 2.7 in
67.6mm / 2.7 in
78.5mm / 3.09 in
70mm / 2.76 in
63mm / 2.48 in
Overall Length
Approx. 99.9mm / 3.9 in (from the tip of the lens to the base side of the lens mount)
Approx. 73.8mm / 2.9 in (from the top of the lens hood to the base side of the lens mount)
3.56 in
Approx. 84mm / 3.31 in (from the tip of the lens to the base side of the lens mount)
Approx. 25.5mm / 1.00 in (from the tip of the lens to the base side of the lens mount)
Weight
Approx. 360g / 12.7 oz (excluding lens cap, lens rear cap, lens hood)
Approx. 305g / 10.8 oz (excluding lens cap and lens rear cap)
1.18 lbs
Approx. 460g / 16.23 oz
3.53 oz
Standard Accessories
Lens front cap, Lens rear cap, Lens hood, Lens storage bag
Lens cap, Lens hood, Lens rear cap, Lens storage bag
Lens Cap, Lens Hood, Lens Rear Cap, Lens Storage Bag
Lens Cap, Lens Hood, Lens Rear Cap, Lens Storage Bag
Lens Cap, Lens Hood, Lens Rear Cap, Lens Storage Bag

Product Information

Product Dimensions 1 x 2.5 x 2.5 inches
Item Weight 3.5 ounces
Shipping Weight 4.8 ounces
ASIN B002IKLJVE
Item model number H-H020
Customer Reviews
4.6 out of 5 stars 301 customer reviews

4.6 out of 5 stars
Best Sellers Rank #28 in Camera & Photo > Lenses > Camcorder Lenses
#7,216 in Electronics > Camera & Photo > Video
Date first available at Amazon.com September 1, 2009

Warranty & Support

Product Warranty: For warranty information about this product, please click here

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Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Verified Purchase
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).
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Verified Purchase
If you own an E-P1, you absolutely owe it to yourself to get this lens right now. I used to own the 17mm and loved its size, but found the image quality lacking. There are plenty of detailed reviews of this 20mm lens out there so I'll spare the tech details.

I've had this for a little over a week and the performance is just amazing. Auto focus speed is very good, not super speedy, but definitely not slow. Images look sharp even wide open with lovely bokeh. It's not quite as nice as the Panasonic/Leica 25mm 1.4 for 4/3, but it is half the price and 1/4 of the size.

I have some good glass like the Olympus 50mm f2 and Olympus 14-52 mark II 2.8-3.5 via the adapter, but those will probably stay on my E-620 since this Panasonic 20mm fits the E-P1 like a glove.

It's amazing how this lens makes the E-P1 come alive like no other lens I've used on it before.

UPDATE 7/12/2010
It's getting close to one year of full use and this lens is still unmatched for native micro four thirds. I now use it on an E-PL1 and it's still working it's magic. With the latest Olympus firmware update for the E-PL1 (available for E-P1 and EP2 as well) the autofocus speed of the 20mm is even faster! As my photographic skill have increased over the month, I've been able to get even better results.
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Verified Purchase
I originally bought the Panasonic Lumix GF1 with the 14-45mm kit lens, and then bought this 20mm pancake.

The pancake turns the GF1 into a really compact set, that I enjoy taking together anywhere. I keep the 20mm lens in the camera most of the times, and only when I know I'll need some telephoto I replace it by the 14-45mm lens.

I owned previously only point-and-shoot and superzooms, so I wanted to try some DSLR, but I was afraid I wouldn't take together because of the bulk. With the GF1 + this pancake lens I have a small camera that I don't mind carrying and that takes DSLR-quality photos.

It lacks OIS, but I don't really feel the need as this is a very fast lens. With the f/1.7 aperture, you can also create nice narrow depth-of-field effects, which are impossible on point-and-shoot cameras.

I just wanted it be a bit wider... notice that this pancake is actually a 40mm in a 35-mm equivalent focal length. Probably in the future Panasonic will release a wide pancake. They currently sell a wide zoom Panasonic 7-14mm f/4.0 Micro Four Thirds Lens for Panasonic Digital SLR Cameras, but that's too expensive.

Panasonic has other few lenses, but I believe this pancake 20mm is what makes more sense to use with the GF1 to have a real compact set.

I found this camera bag
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Verified Purchase
It's very simple, if you have a micro Four Thirds camera, you want this lens. Doesn't matter if you have a Panasonic or Olympus camera, this is the best MFT lens you can buy, and easily the best deal. You can spend more, but you won't get better performance. Hopefully that will change, BTW. Or at least, the ease of making that pronouncement will change.

I have an Olympus E-PL1 with this lens, and unlike some of the older reviews, especially with E-P1 and E-P2, the autofocus is quite good with the latest firmware for the lens and camera. Since the PEN cameras have in-body image stabilization, like god intended, you get some seriously great, crisp shots with this lens.

The minimum focus distance on this lens is tiny, the image quality is fantastic, and, well, there's the speed. Its 1.7 f-stop is the fastest thing in the MFT world, by quite a ways. The next closest is the similar, but shorter focal length, Olympus 17mm f2.8. That's a LOT slower than 1.7, as everyone is well aware, I'm sure. The Panasonic/Leica 45mm is also f2.8.

The speed therefore makes this lens much more versatile and useful than any other MFT lens on the market. With the aperture open, you get a very nice, soft bokeh that is gorgeous. The color repro with this lens is awesome, and I especially love that because I love to take pictures of flowers. The crisp, clear, faithfully reproduced colors of the flower subjects far surpasses the kit lens.

The lens is quite compact, but not as much as the Olympus 17mm, but that's OK because it's packing a larger set of glass, isn't it?

The focus performance must be mentioned.
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