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Sony Vario-Sonnar T* DT 16-80mm f3.5-4.5 ZA Gordon Laing, August 2007

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

Sony DT 16-80mm vs Sony DT 18-70mm corner sharpness

  To compare the corner sharpness of the Sony DT 16-80mm against the DT 18-70mm, we photographed the Enhanced Digital Camera Resolution Chart with each lens at their shortest and longest focal lengths and various apertures in Aperture Priority mode using a Sony A100 body.

The A100 was set to its best quality JPEG and default image tone and sharpening settings. The crops are taken from the extreme lower left corner of the chart and presented here at 100%.

Zoomed-out to its shortest focal length, the DT 16-80mm clearly suffers from softness in the corners when shooting subjects at close range; indeed you need to close the aperture significantly before the result becomes sharp. Interestingly this is pretty much the same result found with the kit lens, although the Carl Zeiss model leaps ahead in terms of corner sharpness when dealing with more distant subjects as seen in our Sony DT 16-80mm outdoor results page.

Zoom both lenses in and the corner sharpness at close range is greatly improved, and respectable even with the aperture wide open - and again the optical characteristics of both lenses remains quite similar here too. Our next results page tests the Sony DT 16-80mm fringing and macro performance.

Corner sharpness, wide angle

Sony DT 16-80mm at 16mm using Sony Alpha A100
Sony 16-80mm at 16mm f3.5
Sony 16-80mm at 16mm f5.6
Sony 16-80mm at 16mm f8
Sony 16-80mm at 16mm f16
16-80mm at 16mm f3.5
16-80mm at 16mm f5.6
16-80mm at 16mm f8
16-80mm at 16mm f16

Sony DT 18-70mm at 18mm using Sony Alpha A100
Sony 18-70mm at 18mm f3.5
Sony 18-70mm at 18mm f8
Sony 18-70mm at 18mm f16
18-70mm at 18mm f3.5
18-70mm at 18mm f5.6
18-70mm at 18mm f8
18-70mm at 18mm f16

Corner sharpness, telephoto

Sony DT 16-80mm at 80mm using Sony Alpha A100
Sony 16-80mm at 80mm f4.5
Sony 16-80mm at 80mm f8
Sony 16-80mm at 80mm f11
Sony 16-80mm at 80mm f16
16-80mm at 80mm f4.5
16-80mm at 80mm f8
16-80mm at 80mm f11
16-80mm at 80mm f16

Sony DT 18-70mm at 70mm using Sony Alpha A100
Sony 18-70mm at 70mm f5.6
Sony 18-70mm at 70mm f8
Sony 18-70mm at 70mm f11
Sony 18-70mm at 70mm f16
18-70mm at 70mm f5.6
18-70mm at 70mm f8
18-70mm at 70mm f11
18-70mm at 70mm f16

Sony DT 16-80mm lens results continued...

Outdoor / Resolution / Corner sharpness / Fringe and macro / Geometry / Vignetting
All words, images, videos and layout, copyright 2005-2016 Gordon Laing. May not be used without permission.

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