Fujifilm Fujinon XF 50 mm f/1.0 R WR
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. |
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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 |
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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 |
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