PANASONIC LUMIX G II Lens, 20MM, F1.7 ASPH., MIRRORLESS Micro Four Thirds, H-H020AK (USA Black)

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From the measurements, it appears the resolution outer corners always lags relative to the center. In practice that is not noticeable, because the resolution in the outer corners up to aperture 4 remains well over 1000 LW/PH.

Over our review period, we’ve come to really appreciate the 20mm f1.7 II lens. It’s built and feels super solid with a metal exterior that works well with both the OMD EM5 and the GH4. When it comes to manually focusing though, you’ll only be working with a small sliver of a focusing ring. Granted, this lens isn’t weather sealed nor does it really need to be. I am reading this review long after its was originally written. Possibly the best review (fit for human consumption :)) I have read while trying to understand the m4t camera and lens combination. I recently bought EP 3 after a long research but was almost questioning my decision after using it with kit lens 14-42. Somehow I was expecting bit more. I have been using Canon G9 all these years and quality from EP3 wasn’t too great. After reading your review I have made my decision to go with 20 (there is still some hope). See our list of tested lenses or our list of tested micro-43 lenses to compare the performance of this lens to other lenses. At maximum aperture, sharpness in the centre of the frame is already excellent and the clarity produced towards the edges of the frame is very good. Stopping the lens down to f/4 improves the sharpness towards the edges to excellent levels and outstanding levels in the centre. Smaller apertures result in a loss of sharpness due to diffraction, but the quality is still very good across the frame down to f/11.Now we’re starting to zoom in a lot closer. Each lens from here on was a bit more challenging to use, it was harder to get everything I wanted to in the frame. You really have to rethink how you take photographs of the landscape around you.

Both the 15mm and this 20mm lens sit right above and below the well known 35mm focal length. 35mm looks great in so many situations, one of the reasons it’s still so widely used today. It’s neither too wide nor too tight. You can capture a variety of scenes with it. WYSIWYG score:This table shows the performance of this lens when you save the files in the camera as jpg, including all in-camera lens corrections (distortion, chromatic aberration). This score gives you for this lens/test camera combination: “What you see is what you get”.Pure RAW score:This table shows the performance of this lens when the file is stored in the camera as a RAW file. This score approaches the intrinsic quality of the combination of lens and test camera. If you make use of Photoshop, Lightroom or SilkyPix for converting RAW files, then the RAW scores for chromatic aberration and distortion are the same as the jpg scores.