Lens review

Voigtlander Nokton 35 mm f/0.9 Aspherical

18 February 2024
Maciej Lata³³o

4. Image resolution

The resolution test of the Voigtlander Nokton 35 mm f/0.9 was based on RAW files from the Fujifilm X-T2. Then the files were developed with the dcraw program (with the 3-pass X-trans algorithm filter) and analyzed with help of the Imatest package.

Let's remind here that the best fixed focal length Fujifilm X lenses, tested that way, are able to reach as high as 80 lpmm and the decency level is set near 44-45 lpmm. The resolution record for this sensor amounts to about 85 lpmm and higher, with the best result belonging to the Fujinon XF 56 mm f/1.2 R WR (92.8 ±1.1 lpmm), the Fujinon XF 18 mm f/1.4 R WR (93.5 ±0.9 lpmm), and the Viltrox 75 mm f/1.2 (99.8 ±1.2 lpmm).

Let's check how the Voigtlander Nokton 35 mm f/0.9 Aspherical compares – its results in the centre and on the edge of the frame presents a graph below.

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Voigtlander Nokton 35 mm f/0.9 Aspherical - Image resolution

In the frame centre, near the maximum relative aperture, images provided by the Nokton can hardly be called sharp, with the results just slightly exceeding 40 lpmm. Sensible values can be observed on stopping down the lens a bit above f/1.0. By f/1.4 you deal with a good value of over 65 lpmm and by f/2.0 the MTFs reach almost 77 lpmm. F/2.8 and f/4.0 apertures represent already an excellent level of 82-83 lpmm.

The Laowa 0.93/33, optically a bit more complex, performed weaker up to f/1.4 but from f/2.0 upwards it had a slightly better results, reaching near 84-85 lpmm at the maximum. Mind you, these differences aren't very pronounced and most of them are included within the margin of measurement error.

The situation is noticeably worse on the edge of the frame. Here image quality is weak up to f/2.0 inclusive, becoming sensible only near f/2.2. Maximum results, reached near f/5.6, aren't that impressive either, as they amount to near 55 lpmm. The Laowa performed here much better, both near the maximum relative aperture and on stopping down where it could get near 65 lpmm.

The Nokton loses the duel with the Laowa, being a lens about three times more expensive. Its results in the centre are roughly the same as the results of the Laowa and it is weaker on the edge of the frame – overall, really nothing to brag about.

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

Fujifilm X-T2, JPEG, f/0.9
Voigtlander Nokton 35 mm f/0.9 Aspherical - Image resolution
Fujifilm X-T2, JPEG, f/4.0
Voigtlander Nokton 35 mm f/0.9 Aspherical - Image resolution