Originally Posted by
Bob Salomon - HP Marketing
Marc,
The definition of Apo for the Schneider and Rodenstock lenses is that the lateral chromatic aberrations in the secondary spectrum have been corrected to a minute percentage of the focal length of the lens.
The definition you cited is the Abbe definition used for microscophy and process work.
The results from the Rodenstock Apo Sironar S will be outstanding in any application you will use with reproduction ratios from 1:5 out to infinity.
An apo macro lens like the Apo Macro Sironar will perform best on reproductions ratios from 1:5 to 5:1 with 3 dimensional subjects. A process lens like an Apo Ronar will be best for 2 dimensional objects at near life size.
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