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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


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Outdoor scene: Sony DT 16-80mm vs Sony 18-70mm with Alpha A100


Sony DT 16-80mm at 22mm f8   To compare real-life performance we shot the same scene with the Sony DT 16-80mm and Sony 18-70mm using the Sony Alpha A100 within a few moments of each other using the camera's best quality JPEG and lowest ISO settings.

The A100 was set to Large Fine JPEG mode and its Vivid colour mode. The crops are taken from the originals and presented here at 100%.

The image left was taken with the Sony Alpha A100 using the DT 16-80 mm at 22mm f8; the original JPEG measured 3.84MB.

Sometimes we have to examine crops very closely to spot differences between products, but each of the examples below clearly illustrate the optical superiority of the Sony DT 16-80mm over the standard kit lens.

Starting with the first row of crops taken from the upper left corner and showing the mountain ridge, the DT 16-80mm sample is sharper, better-corrected, suffers from noticeably less coloured fringing and also exhibits higher contrast, revealing subtle tonal details which are washed-out on the kit lens sample.

The second row of crops taken from the middle of the image again show greater contrast and a punchier-looking result from the DT 16-80mm than the kit lens.

The third row of crops, taken from the lower right corner of the image, tells a similar story to the first row: namely the DT 16-80mm being much better corrected compared to the somewhat soft edge performance of the kit lens, coupled with higher contrast for good measure.

Normally we’d stop with these three crops, but have included a fourth set of samples taken from halfway up the far left side of the image. These brightly illuminated buildings particularly reveal coloured fringing on the kit lens and again illustrate the optical superiority of the DT 16-80mm.

So while the build quality and focusing aren’t amazing, the DT 16-80mm redeems itself with its optical performance under real-life conditions. Now let’s see how it measures-up in the studio: next up, the Sony DT 16-80mm resolution.



Sony DT 16-80mm f/3.5-4.5
Sony DT 18-70mm f/3.5-5.6
Sony DT 16-80mm - crop 1
Sony 18-70mm - crop 1
1/200, f8, 100 ISO
1/200, f8, 100 ISO
Sony DT 16-80mm - crop 2
Sony 18-70mm - crop 2
1/200, f8, 100 ISO
1/200, f8, 100 ISO
Sony DT 16-80mm - crop 3
Sony 18-70mm - crop 3
1/200, f8, 100 ISO
1/200, f8, 100 ISO
Sony DT 16-80mm - crop 4
Sony 18-70mm - crop 4
1/200, f8, 100 ISO
1/200, f8, 100 ISO

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

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




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All words, images, videos and layout, copyright 2005-2012 Gordon Laing. May not be used without permission.

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