Panasonic 20mm and Olympus 14-42mm comparison shots

Just recently acquired a Panasonic 20mm pancake for my Olympus E-P1. I thought I'd have a look at which produced the best shot, side by side, between the new lens and the kit zoom. It's just a quick test, that I did a moment ago here on my desk at work.

The photos were taken a few seconds apart, from the same position on a mini tripod, framed to be as precisely the same as possible. The exposure was 1/15 at f/5.6 at ISO 200. These are the JPEGs; raw images are available if anybody's really that interested.

The first one is the Panasonic, the second one is the E-P1's kit zoom. Click the images for the full sized original. The resized ones aren't much cop.

Immediately you'll notice that the photos are not identically shaped. Although the focal plane to object distance was identical, the zoom lens' objective element was much closer to the subject, and the lens itself reported that it was at 18mm. When shot at 20mm , the framing was noticably different. I went for similar framing, rather than similar EXIF data.

As for quality? You'd be hard-pressed to see a difference. The Panasonic really shines when its aperture is open wider than the zoom lens' is able.

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Well, to compare properly I'd have to stop the lens at f/3.5 or smaller. Clearly, the 20mm's ability to open wider means that it's going to be able to make better images in low light. Similarly, the zoom lens lets me frame images as I like, which isn't a strength of primes.

Basically, I was just idly curious as to whether my new 20mm lens was better than my kit lens when stopped down to the middle in normal, workable lighting. Turns out it wasn't, and it was no real effort for me to share that result.

 

Indeed, Saelee! I didn't buy the 20mm for the quality of its daylight shots, but because I like to take photos in a goth club, where everybody wears black in a darkened room. A wide aperture is pretty much a necessity if I'm using available light.

The other big advantage is the size, of course. The kit zoom got looks from people on the street. The pancake does not.

 

My mother in law. She's lovely, really. I'm not even going to tell you through which lens each photograph was taken. This is just intended as a quick real-world comparison of the same two lenses as before, both well within their comfort zones. I used program mode, and the camera made different decisions about each shot. I wasn't careful about framing. It's about as un-scientific as it gets. Enjoy.
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You're right. The biggest explanation for the different qualities of the two photographs probably isn't the lens; while I was changing the lenses, the sun went in slightly, as can be seen in the softness of the shadow on the sleeve of her fleece.