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Sony SAL-1118 DT 11-18mm f4.5-5.6 lens review Gordon Laing, September 2007

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

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Sony DT 11-18mm vs DT 18-70mm resolution comparison, with Alpha A100


  To measure and compare the Sony DT 11-18mm's resolving power we photographed the Enhanced Digital Camera Resolution Chart with it and the DT 18-70mm kit lens using the Sony A100 body set to its best quality JPEG and settings. Anti-shake was turned off.

The crops are taken from the original images, saved as High Quality JPEGs in Photoshop CS2 and presented here at 100%. Each number represents 100 lines per picture height (lpph), so a figure of 20 means a resolution of 2000 lpph.

We tested the Sony DT 11-18mm at a focal length of 18mm where it delivered 2100 and 2150 lpph of horizontal and vertical resolution respectively. While the horizontal figure was fractionally below the kit zoom, it doesn't translate into perceptively greater real-life detail - see our outdoor results for examples. The greater apparent sharpness of the kit zoom in the test below is also due to it being shot with the A100's Vivid colour setting, compared to the Standard setting used for the DT 11-18mm; if you apply additional sharpening and contrast to the DT 11-18mm results you can get a similar looking effect. Next up, the Sony DT 11-18mm corner sharpness.

Sony DT 11-18mm
Using Sony Alpha A100
Sony DT 18-70mm
Using Sony Alpha A100
Sony DT 18-70mm horizontal resolution
2100 lpph, DT 11-18mm at 18mm, f8, 100 ISO
2150 lpph, DT 18-70mm at 35mm, f8, 100 ISO


Sony DT 11-18mm
Using Sony Alpha A100
Sony DT 18-70mm
Using Sony Alpha A100
Sony DT 18-70mm vertical resolution
2150 lpph, DT 11-18mm at 18mm, f8, 100 ISO
2150 lpph, DT 18-70mm at 35mm, f8, 100 ISO

Sony DT 11-18mm lens results continued...

Outdoor / Resolution / Corner sharpness / Fringe and macro / Geometry / Vignetting
All words, images, videos and layout, copyright 2005-2014 Gordon Laing. May not be used without permission.

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