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Olympus OM-D E-M5

Correcting color aberrations with the 12mm f/2

The Olympus Zuiko 12mm f/2 is a very fine lens, but does have some modest uncorrected color errors, both lateral chromatic aberration (color fringing) and longitudinal chromatic aberration (violet haze around high contrast edges).

These aberrations are easily corrected in Photoshop CS6 when converting with Adobe Camera RAW.

Stopping down eliminates the axial chromatic aberration, but lateral chromatic aberration does not improve with stopping down. For more on lens aberrations, see Making Sharp Images.

Example at f/2

Corrected for lateral chromatic aberration via the Remove Chromatic Aberration checkbox. Corrected for longitudinal (axial) chromatic aberration via Purple Amount = 3.

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Diglloyd Guide to Mirrorless offers comprehensive integrated coverage of most APS-C and full frame mirrorless cameras and lenses.

Special emphasis is placed on Sony full-frame, including Sony lenses and the high performance Zeiss Batis and Zeiss Loxia lenses plus Rokinon/Samyang and others. Fujifilm X, Olympus and Panasonic M4/3, Sigma dp Merrill and dp/sd Quattro are also covered in depth. Years in the making, it offers a wealth of material for choosing and using a mirrorless camera.

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  • Optical quality analysis of field curvature, focus shift, sharpness, flare, distortion, and performance in the field.

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