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Lens review

Fujifilm Fujinon XF 18 mm f/2 R

14 September 2012
Szymon Starczewski

5. Chromatic and spherical aberration


Chromatic aberration

The longitudinal chromatic aberration is not bothersome in the case of the tested lens. The colouring of off-focus images even near the maximum aperture is slight – you really don’t have to worry about it.

Fujifilm Fujinon XF 18 mm f/2 R - Chromatic and spherical aberration


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The lateral chromatic aberration is decently corrected because the results range from 0.08 to less than 0.11%. Such values, being on the borderline between low and moderate level, are no reason to complain.

Fujifilm Fujinon XF 18 mm f/2 R - Chromatic and spherical aberration

Fujifilm Fujinon XF 18 mm f/2 R - Chromatic and spherical aberration

Spherical aberration

The tested lens has no problems with correcting the spherical aberration – there is no „focus shift” effect and no characteristic „mist” at the maximum relative aperture. Also the photos of a diode, positioned in front of and behind the focus, are proof of it.

Fujifilm Fujinon XF 18 mm f/2 R - Chromatic and spherical aberration

The light spread in the circles is more or less even, without any local extremes.