Olympus ZUIKO DIGITAL ED 7-14mm 1:4.0 review

Olympus ZD 7-14mm corner sharpness, tested with Olympus E-410


Olympus ZD 7-14mm results continued…

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

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To compare corner sharpness we photographed the Enhanced Digital Camera Resolution Chart with a variety of Four Thirds lenses, including the 7-14mm, both the new and old Olympus kit zooms, and the Leica 14-50mm.

Each lens was tested at its widest and longest focal lengths and with various apertures using Aperture Priority mode. The crops are taken from the lower left corner of the chart and presented here at 100%. Some crops show a larger area of the chart because the minimum focusing distances forced us to shoot from further away; the older ZD 14-45mm was also mounted on the E-500 which has a lower resolution. No crops have been resized.

The Olympus 7-14mm lens clearly exhibits purple fringing in its extreme corners in this test when zoomed-out, but at a focal length of 7mm, the lens was positioned extremely close to our chart for it to fill the frame. The effect of coloured fringing reduces at longer distances and we rarely noticed it in our real-life shots as seen on our Gallery. Zoomed-into 14mm, the fringing is much reduced.

In terms of actual sharpness in the corners though, the 7-14mm performs very well, both in this test at very close range, and also with subjects further away, again as seen in our Gallery. It’s a very well-corrected lens.

Olympus ZD 7-14mm
Olympus ZD 14-42mm ED
Olympus ZD 14-45mm
Leica 14-50mm
Olympus E-400 with 14-42mm at 14mm f3.5
Olympus E-500 with 14-45mm at 14mm f3.5
Panasonic L1 with 14-50mm at 14mm f2.8
7-14mm at 7mm f4
14-42mm at 14mm f3.5
14-45mm at 14mm f3.5
14-50mm at 14mm f2.8
Olympus E-400 with 14-42mm at 14mm f8
Olympus E-500 with 14-45mm at 14mm f8
Panasonic L1 with 14-50mm at 14mm f8
7-14mm at 7mm f8
14-42mm at 14mm f8
14-45mm at 14mm f8
14-50mm at 14mm f8
Olympus E-400 with 14-42mm at 14mm f16
Olympus E-500 with 14-45mm at 14mm f16
Panasonic L1 with 14-50mm at 14mm f16
7-14mm at 7mm f16
14-42mm at 14mm f16
14-45mm at 14mm f16
14-50mm at 14mm f16
             
Olympus ZD 7-14mm
Olympus ZD 14-42mm ED
Olympus ZD 14-45mm
Leica 14-50mm
Olympus E-400 with 14-42mm at 42mm f5.6
Olympus E-500 with 14-45mm at 45mm f5.6
Panasonic L1 with 14-50mm at 50mm f3.5
7-14mm at 14mm f4
14-42mm at 42mm f5.6
14-45mm at 45mm f5.6
14-50mm at 50mm f3.5
Olympus E-400 with 14-42mm at 42mm f8
Olympus E-500 with 14-45mm at 45mm f8
Panasonic L1 with 14-50mm at 50mm f8
7-14mm at 14mm f8
14-42mm at 42mm f8
14-45mm at 45mm f8
14-50mm at 50mm f8
Olympus E-400 with 14-42mm at 42mm f16
Olympus E-500 with 14-45mm at 45mm f16
Panasonic L1 with 14-50mm at 50mm f16
7-14mm at 14mm f16
14-42mm at 42mm f16
14-45mm at 45mm f16
14-50mm at 50mm f16
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