Olympus Zuiko Digital 50 mm f/2.0 Macro ED
5. Chromatic aberration
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The ED letters on the lens suggest that we shouldn’t have any problems with chromatic aberration. It’s worth giving it a reality check, though, because often we have witnessed situations when instruments stuffed with low-dispersion glass showed high chromatic aberration nevertheless. The Olympus ZD 2.0/50 ED carries out that task to perfection – it is a model to be followed by other lenses. As you see on the graph below and in the crops of the test charts’ edges the aberration for all apertures range is negligible. A standing ovation!
