Why does photo.de rate EF 180 F/3.5L much lower than Sigma 180?


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dRebelXT

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May 14, 2005
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#1
Here are MTFs of the two lens from Photo.de
It seems to me Canon is kinda inferior, but why?
Consider the price differences, what makes Canon much preferrable?

Canon:

Sigma:


:confused:
 

milamber

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Nov 23, 2006
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#2
3rd party doesn't always mean inferior to marque lens, especially the latest ones made for digital camera bodies. Most notably, the macro lenses produced by 3rd parties are exceptionally sharp. Take the legendary Tamron 90mm macro for example.
 

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