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Lens review

Fujifilm Fujinon XF 33 mm f/1.4 R LM WR

23 December 2021
Maciej Latałło

5. Chromatic and spherical aberration

Chromatic aberration

The optical construction of the Fujinon 1.4/33 features as many as three elements made of low dispersion glass and images, shown below, prove these elements perform as they should. It would be difficult to notice any colouring in out-of-focus images even at the maximum relative aperture. It indicates that the lens corrects longitudinal chromatic aberration properly well.

Fujifilm Fujinon XF 33 mm f/1.4 R LM WR - Chromatic and spherical aberration


Lateral chromatic aberration can be described in similar terms. Let's glance at a graph below.

Fujifilm Fujinon XF 33 mm f/1.4 R LM WR - Chromatic and spherical aberration


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The aberration increases with stopping down the aperture but its values are within a range we describe as very low. It seems you won't have any problems whatsoever with this variant of chromatic aberration.

Fujifilm X-T2, RAW, f/1.4 Fujifilm X-T2, RAW, f/11.0
Fujifilm Fujinon XF 33 mm f/1.4 R LM WR - Chromatic and spherical aberration Fujifilm Fujinon XF 33 mm f/1.4 R LM WR - Chromatic and spherical aberration

Spherical aberration

In first photos of this chapter you can notice a very slight focus shift towards greater distances on stopping down the aperture by 1 EV. The effect is not very conspicuous but it might indicate that spherical aberration isn't corrected perfectly well.

It is also confirmed by the appearance of defocused circles of light we got before and behind the focal point – even if differences between them aren't that big they aren't identical either.

Fujifilm X-T2, f/1.4, before Fujifilm X-T2, f/1.4, after
Fujifilm Fujinon XF 33 mm f/1.4 R LM WR - Chromatic and spherical aberration Fujifilm Fujinon XF 33 mm f/1.4 R LM WR - Chromatic and spherical aberration