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Olympus Zuiko Digital 25mm 1:2.8 'pancake' Gordon Laing, June 2008

More Results : Outdoor / Resolution / Corner sharpness / Fringe and macro / Geometry / Vignetting

Olympus ZD 25mm corner sharpness

  To compare corner sharpness we photographed the Enhanced Digital Camera Resolution Chart with a variety of Four Thirds lenses, including the 25mm pancake, the 50mm macro and the latest Olympus kit zoom at its widest and longest focal length.

Each lens was tested with various apertures using Aperture Priority mode. The crops are taken from the lower left corner of the chart and presented here at 100%.

The Olympus 25mm lens exhibits a little coloured fringing in the extreme corners throughout its aperture range - this is apparent in all three samples below, although in the first with the aperture wide open at f2.8, the vignetting is masking some of the effect. Judging from our other tests, this fringing appears to be the biggest optical issue with the 25mm pancake lens, and it's a shame you can't completely eliminate it by stopping-down the aperture. To see how it impacts a real-life situation, see our first outdoor results page. Otherwise, let's continue with the results on our fringing and macro page.


Olympus ZD 25mm
Olympus ZD ED 50mm
Olympus ZD 14-42mm ED
Olympus ZD 14-42mm ED
Olympus E-400 with 14-42mm at 14mm f3.5
Olympus E-400 with 14-42mm at 42mm f5.6
25mm at f2.8
50mm at f2
14-42mm at 14mm f3.5
14-42mm at 42mm f5.6
Olympus E-400 with 14-42mm at 14mm f8
Olympus E-400 with 14-42mm at 42mm f8
25mm at f8
50mm at f8
14-42mm at 14mm f8
14-42mm at 42mm f8
Olympus E-400 with 14-42mm at 14mm f16
Olympus E-400 with 14-42mm at 42mm f16
25mm at f16
50mm at f16
14-42mm at 14mm f16
14-42mm at 42mm f16

Olympus ZD 25mm results continued...

Outdoor / Resolution / Corner sharpness / Fringe and macro / Geometry / Vignetting

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All words, images, videos and layout, copyright 2005-2014 Gordon Laing. May not be used without permission.

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