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Tamron 18-200mm resolution, tested with Nikon D2X
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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. |
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Tamron AF18-200mm F3.5-6.3 XR Di-II LD IF using Nikon
D2X
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Nikkor AF-S DX VR 18-200mm 3.5-5.6G IF-ED using Nikon
D2X
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2250 lpph, 18-200mm at 200mm, f8, 100 ISO
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2250 lpph, 18-200mm at 200mm, f8, 100 ISO
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Sigma 18-200mm F3.5-6.3 DC using Nikon D2X
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Nikkor AF 50mm f1.8 using Nikon D2X
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2250 lpph, 18-200mm at 200mm, f8, 100 ISO
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2450 lpph, 50mm, f8, 100 ISO
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Tamron AF18-200mm F3.5-6.3 XR Di-II LD IF using Nikon
D2X
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Nikkor AF-S DX VR 18-200mm 3.5-5.6G IF-ED using Nikon
D2X
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1900 lpph, 18-200mm at 200mm, f8, 100 ISO
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1900 lpph, 18-200mm at 200mm, f8, 100 ISO
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Sigma 18-200mm F3.5-6.3 DC using Nikon D2X
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Nikkor AF 50mm f1.8 using Nikon D2X
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1900 lpph, 18-200mm at 200mm, f8, 100 ISO
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2300 lpph, 50mm, f8, 100 ISO
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