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Lens review

Fujifilm Fujinon XF 50 mm f/1.0 R WR

22 December 2020
Maciej Latałło

5. Chromatic and spherical aberration

Chromatic aberration

High price, big dimensions and two elements made of low dispersion glass inside suggested that you get an instrument with chormatic aberration perfectly corrected. Unfortunately, once again the Fujinon let us down a bit. Longitudinal chromatic aberration makes itself felt at the maximum relative aperture and remains visible on stopping down the aperture by 1 EV.

Fujifilm Fujinon XF 50 mm f/1.0 R WR - Chromatic and spherical aberration

Will the correction of lateral chromatic aberration make us more happy? Let's find out.

Fujifilm Fujinon XF 50 mm f/1.0 R WR - Chromatic and spherical aberration


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In this case the aberration level is negligible near the maximum relative aperture, reaching just 0.03-0.04%. By f/2.0 there is a distinct increase of values and the lens lands near 0.08%. It is a borderline between low and medium values so there is still no reason to complain.

Fujifilm X-T2, RAW, f/1.0 Fujifilm X-T2, RAW, f/8.0
Fujifilm Fujinon XF 50 mm f/1.0 R WR - Chromatic and spherical aberration Fujifilm Fujinon XF 50 mm f/1.0 R WR - Chromatic and spherical aberration


Spherical aberration

In first photos of this chapter you can notice a slight shift of the focus towards greater distances. Some problems with spherical aberration are also confirmed by the appearance of defocused circles of light reached before and behind the focus. It is clear the first circle has soft edges and their brightness decrease at the very end and the second circle comes with a very visible, bright rim. It is a classic example of bad correction of spherical aberration and another slip-up of the tested Fujinon.

Fujifilm X-T2, f/1.0, before Fujifilm X-T2, f/1.0, after
Fujifilm Fujinon XF 50 mm f/1.0 R WR - Chromatic and spherical aberration Fujifilm Fujinon XF 50 mm f/1.0 R WR - Chromatic and spherical aberration