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Lens Contrast (Part 8 : MTF Chart)


_DSC3814, originally uploaded by shutterhack.

Taken with a Nikon D50 and AF Zoom-Nikkor 70-300mm f/4-5.6G lens

Then, the wide-open chart should look as much like the stopped-down chart as possible (predicting consistent performance throughout the aperture range). The lenses that most closely approximate this description are highly corrected short telephotos of moderate aperture. Designers often have somewhat more money to work with when designing macro lenses, so macros such as the 100mms from Leica, Zeiss, and Canon, and the Zuiko 90mm F/2 from Olympus, probably can be said to have the best MTF charts I've seen.

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