Magnification factors for macro lenses

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Originally Posted by xpatUSA

. . . Just a bit of added data:

With the focusing ring set at 0.2m distance, the magnification mark on the barrel shows as 1:1.6 **.

** On Sigma lenses, the magnification ratio is marked backasswards (image to object).

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I didn't notice that comment on my first reading - that's quirky.

WW

Quote:

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Originally Posted by William W

Quote:

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On Sigma lenses, the magnification ratio is marked backasswards (image to object)

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I didn't notice that comment on my first reading - that's quirky.

WW

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Welcome to the world of Sigma, Bill!

Their lens-mount (SA) is clock-wise to insert lens - opposite to Nikon.

Their zoom rings go backasswards (ACW for longer) to somebodies, I'm sure.

And their "resolution" is whatever Chuck Norris says it is . . . ;)