Lens review

Fujifilm Fujinon XF 33 mm f/1.4 R LM WR

23 December 2021
Maciej Lata³³o

4. Image resolution

The resolution test of the Fujinon XF 33 mm f/1.4 R LM WR was based on RAW files from the Fujifilm X-T2 camera processed by dcraw (with the 3-pass X-trans filter algorythm) and analysed with the Imatest package.

Let's remind here that the best Fujifilm X system lenses, tested that way, are able to reach results of 80 lpmm and the decency level is set near 44-45 lpmm. Record values for that sensor amount to 85 lpmm and higher. So far, the best resolution results have been achieved by the Viltrox AF 23 mm f/1.4 XF (85.3 ±0.9 lpmm) and the Fujinon XF 18 mm f/1.4 R WR (93.5 ±0.9 lpmm).

Let's check how the results of the Fujinon XF 33 mm f/1.4 R LM WR in the frame centre and on the edge compare – an appropriate graph you can find below.

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Fujifilm Fujinon XF 33 mm f/1.4 R LM WR - Image resolution

The resolution in the frame centre is simply great. Already at the maximum relative aperture the lens gets to 61.5 lpmm so definitely higher than the decency level, producing images of very good quality. The peak of its performance can be observed by f/4.0 where the MTFs exceed 79 lpmm. We are very pleased to say the lens fares as it befits a good prime; also it is able to reach a resolution several lpmm higher than that of the slower Fujinon XF 35 mm f/2 R WR.

I admit that the Fujinon XF 1.4/18, the current holder of our resolution record, spoiled me a bit. Let me poke holes in the undoubtedly excellent performance of the Fujinon 1.4/33 and say that I would feel much better if the tested lens actually exceeded 80 lpmm.

The Fujinon should be also praised for its performance on the edge of the frame. At the maximum relative aperture you get a result of almost 47 lpmm so images are of a decent quality. On stopping down the resolution improves graudally, with a maximum noted near f/5.6 where the lens is able to exceed a very high level of 66 lpmm.

To sum up, the Fujinon XF 33 mm f/1.4 R LM WR didn't have any weaknesses in this part of our test; it fulfills your expectations, faring as a good quality system prime should fare.

At the end of this chapter we present crops of our resolution testing chart, taken from JPEG files, saved along RAW files which were used for the analysis above.

Fujifilm X-T2, JPEG, f/1.4
Fujifilm Fujinon XF 33 mm f/1.4 R LM WR - Image resolution
Fujifilm X-T2, JPEG, f/4.0
Fujifilm Fujinon XF 33 mm f/1.4 R LM WR - Image resolution