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Lens review

Venus Optics LAOWA Argus 25 mm f/0.95 MFT

30 November 2022
Maciej Lata││o

7. Coma, astigmatism and bokeh

I was really curious how the tested Argus would correct coma. On the one hand such fast lenses usually experience a lot of problems with this aberration - even the expensive Nokton corrected it badly. A bit slower Olympus 1.2/25 dealt with it sensibly well for a change.

The fact that the performance of the Argus is much closer to the performance of the Olympus than that of the Voigtlander was a very pleasant surprise. Coma is perhaps not negligible, because slight deformations of a diode can be noticed, but definitely its level cannot be called high. It's rather on the borderline between low and medium values. Taking into account the aperture of the tested lens, it deserves to be praised.

E-M5áII, f/0.95, center E-M5áII, f/0.95, Corner
Venus Optics LAOWA Argus 25 mm f/0.95 MFT - Coma, astigmatism and bokeh Venus Optics LAOWA Argus 25 mm f/0.95 MFT - Coma, astigmatism and bokeh
E-M5áII, f/1.4, center E-M5áII, f/1.4, Corner
Venus Optics LAOWA Argus 25 mm f/0.95 MFT - Coma, astigmatism and bokeh Venus Optics LAOWA Argus 25 mm f/0.95 MFT - Coma, astigmatism and bokeh


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Astigmatism, understood as an average difference between horizontal and vertical MTF50 function values, amounted here to 7.6%. It's a moderate value, the Argus fares here almost as well as the Nokton and noticeably better than the Olympus.

Appearance of out-of-focus images is very pleasing to the eye but not as nice as you should expect from an f/0.95 standard lens. Light spread in the circles is not perfectly even, with a slight trace of onion ring bokeh. What's more, mechanical vignetting makes itself felt even on stopping down the aperture to 2 EV – a rare thing for such a small sensor as the Micro 4/3.

E-M5áII, f/0.95, center E-M5áII, f/0.95, Corner
Venus Optics LAOWA Argus 25 mm f/0.95 MFT - Coma, astigmatism and bokeh Venus Optics LAOWA Argus 25 mm f/0.95 MFT - Coma, astigmatism and bokeh
E-M5áII, f/1.4, center E-M5áII, f/1.4, Corner
Venus Optics LAOWA Argus 25 mm f/0.95 MFT - Coma, astigmatism and bokeh Venus Optics LAOWA Argus 25 mm f/0.95 MFT - Coma, astigmatism and bokeh
E-M5áII, f/2.0, center E-M5áII, f/2.0, Corner
Venus Optics LAOWA Argus 25 mm f/0.95 MFT - Coma, astigmatism and bokeh Venus Optics LAOWA Argus 25 mm f/0.95 MFT - Coma, astigmatism and bokeh