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Tamron AF 18-200mm F3.5-6.3 XR Di-II LD IF Gordon Laing, August 2006


 



 



 

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

Tamron 18-200mm resolution, tested with Nikon D2X

  To measure resolving power we photographed the Enhanced Digital Camera Resolution Chart with each lens set to 200mm f8 using a Nikon D2X in Aperture Priority mode. The D2X was set to Large Fine JPEG mode, optimised for quality rather than size, and with A for Image Sharpening and Tone Compensation.

The crops are taken from the originals and presented here at 100%. Each number represents 100 lines per picture height (lpph), so a figure of 18 means a resolution of 1800 lpph.

There are tonal differences between the crops, but the resolving power in the central area of the chart is much the same for each lens. They each score 2250 and 1900 lpph for horizontal and vertical resolution respectively.

It's revealing to compare these against the Nikon D2X fitted with a 50mm f1.8. The prime lens unsurprisingly resolves more detail than the zooms here, boasting 2450 and 2300 lpph for horizontal and vertical resolution respectively.


Tamron AF18-200mm F3.5-6.3 XR Di-II LD IF using Nikon D2X
Nikkor AF-S DX VR 18-200mm 3.5-5.6G IF-ED using Nikon D2X
2250 lpph, 18-200mm at 200mm, f8, 100 ISO
2250 lpph, 18-200mm at 200mm, f8, 100 ISO

Sigma 18-200mm F3.5-6.3 DC using Nikon D2X
 
Nikkor AF 50mm f1.8 using Nikon D2X
2250 lpph, 18-200mm at 200mm, f8, 100 ISO
2450 lpph, 50mm, f8, 100 ISO


Tamron AF18-200mm F3.5-6.3 XR Di-II LD IF using Nikon D2X
Nikkor AF-S DX VR 18-200mm 3.5-5.6G IF-ED using Nikon D2X
1900 lpph, 18-200mm at 200mm, f8, 100 ISO
1900 lpph, 18-200mm at 200mm, f8, 100 ISO

Sigma 18-200mm F3.5-6.3 DC using Nikon D2X
 
Nikkor AF 50mm f1.8 using Nikon D2X
1900 lpph, 18-200mm at 200mm, f8, 100 ISO
2300 lpph, 50mm, f8, 100 ISO

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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