Panasonic LUMIX G 42.5mm f/1.7 ASPH. POWER O.I.S. Lens

Model #H-HS043K

USA Version
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Weight 4.59 oz (130 g)
Dimensions (DxL) Approx. 2.17 x 1.97" (55 x 50 mm)
Filter Thread Front:37 mm


Format Compatibility Micro Four Thirds
Angle of View 29°
Minimum Focus Distance 1.02' (31 cm)
Magnification 0.2x
Focal Length 42.5mm
Comparable 35mm Equivalent on Micro Four Thirds Format Focal Length: 85 mm
Diaphragm Blades 7, Rounded
Elements/Groups 10/8
Aperture Maximum: f/1.7
Minimum: f/22
Camera Mount Type Micro Four Thirds


Autofocus Yes
Image Stabilization Yes
Expert Reviews
Lenstip com.34355424
27 June 2015

With its first launch of the M.Zuiko Digital 45 mm f/1.8 model Olympus really created a stir on the market of mirrorless lenses, offering an excellent device for a sensible price. Panasonic’s task to beat that was really difficult but they managed to perform admirably well.

  • +

    small, very handy but solid casing,, sensational image quality in the frame centre,, excellent image quality on the edge of the frame, including the maximum relative aperture,, low chromatic aberration, both longitudinal and lateral,, moderate distortion,, lack of coma-related problems,, slight...

  • -

    some problems connected with spherical aberration.

Imaging resource.34355410
18 June 2015

With super sharp results, a small package and a low price point, what more can you want? For portrait shooters in the Micro Four Thirds mount, this is an excellent lens.

Photography blog.34420874
17 April 2015

The Panasonic LUMIX G 42.5mm f/1.7 ASPH. POWER O.I.S. is a very good portrait prime lens, offering a fast maximum aperture with effective image stabilisation in a tiny yet solidly-built package.

User Reviews
B h photo.32817553
8 December 2016

Excellent portrait lens & great value. Transitions from sharp to bokeh are that of a very high quality DSLR lens. A must have for micro 4:3 users. It delivers beautiful results and easily doubles as a macro lens which is great for those of us bringing gear along on remote camping trips.

22 March 2016

This lens is as high quality as the Leica 15mm 1.7, just the focal length is for portraits rather than the wide 15mm lense. This is incredibly sharp and the high/fast stop opening creates amazingly sharp photos with the quality of Leica or other high end lenses.

B h photo.32817553
9 May 2017

Amazing lens for the price. Color isn't quite up there with the 12-35 or Leica-designed glass, but it's very close.

B h photo.32817553
15 April 2017

What else do I need to say? f/17 , great price, small and light

B h photo.32817553
9 April 2017

This is a very nice lens. Beautiful & sharp images and fits the system (size wise) very well. It doesn't have the same feeling of quality (heft and size) as the Leica lenses but it is a much better value than the Leica 42.5. At least for now, it will do very nicely.

B h photo.32817553
9 April 2017

Bought this primarily for video but also to do some occasional stills. First thing that blew me away was how tiny the lens is, so portable, it fits in my pocket. The autofocus is FAST, blows my other Panasonic lenses (20mm & 12-60) away in that regard.

B h photo.32817553
7 April 2017

I used this lens on my GH4 with V-Log setting, in a night scene with one panel light and an overhead street light. The shot turned out very good. As for daylight, great DOF, great close-up shots and easy to manually focus. I love this lens.

B h photo.32817553
6 April 2017

This lens is worth every penny! Very sharp and the bokeh is just GORGEOUS.It is a small lightweight lens but the quality is fantastic. This is my no# portrait lens for sure! But even just for anything (landscape, street), this lens is great! It is fast, sharp, and does very well in low light.

B h photo.32817553
16 March 2017

Very fast lens great for small sensor cameras that need more light. I use it on a G7 and recommend it!

B h photo.32817553
8 March 2017

Great lens. Works well with my Olympus OMD EM1. I chose this lens over the Olympus 45mm f1.8 because it focuses closer, comes with a lens hood, and from what I read, is a little sharper in the corners. After receiving it, I am very satisfied with its performance.

Product Highlights
  • Micro Four Thirds System
  • 85mm (35mm Equivalent)
  • Aperture Range: f/1.7 to f/22
  • One Aspherical Element
  • Stepping AF Motor, Internal Focus
  • POWER Optical Image Stabilizer
  • Rounded 7-Blade Diaphragm
In The Box
  • Panasonic LUMIX G 42.5mm f/1.7 ASPH. POWER O.I.S. Lens
  • Lens Hood
  • Front Lens Cap
  • Rear Lens Cap
  • Lens Storage Bag
  • Decoration Ring
  • Limited 1-Year Warranty
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