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Samyang MF 85mm f/1.4 MK2 Review - Performance

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Samyang MF 85mm f/1.4 MK2 Performance

Central sharpness is very good at f/1.4, excellent from f/2 to f/11, very good at f/16 and good at f/22. The edges are very good from f/1.4 to f/2.8, excellent from f/4 to f/8, very good from f/11 to f/16 and good at f/22. It is really only at f/22 that centre and edge fall off significantly due to diffraction.



Samyang MF 85mm f/1.4 MK2 MTF Charts

How to read our MTF charts

The blue column represents readings from the centre of the picture frame at the various apertures and the green is from the edges.

The scale on the left side is an indication of actual image resolution and sharpness as LW/PH and is described in detail above. The taller the column, the better the lens performance.

For this review, the lens was tested on a Canon EOS 5DS R using Imatest. Want to know more about how we review lenses?

CA (Chromatic Aberration) is very well controlled centrally, approaching zero. The edges are still held to under 1 pixel.


Samyang MF 85mm f/1.4 MK2 Chromatic Aberration Charts

How to read our CA charts

Chromatic aberration (CA) is the lens' inability to focus on the sensor or film all colours of visible light at the same point. Severe chromatic aberration gives a noticeable fringing or a halo effect around sharp edges within the picture. It can be cured in software.

Apochromatic lenses have special lens elements (aspheric, extra-low dispersion etc) to minimize the problem, hence they usually cost more.

For this review, the lens was tested on a Canon EOS 5DS R using Imatest.


Barrel distortion measures at -0.26%, a very low figure that is close to perfectly rectilinear. There should be no problem rendering straight lines as straight lines.

Bokeh, the smooth gradation of the out of focus areas in an image, is very nice indeed, very smooth and perfect for backgrounds to portraits.

Flare is not a problem. It is virtually impossible to induce artefacts and there is no apparent loss of contrast either.

Vignetting is also very impressive, being moderate at full aperture and becoming unnoticeable pictorially as we stop down.

Aperture Vignetting
f/1.4 -1.4
f/2 -0.8
f/2.8 -0.7
f/4 -0.7
f/5.6 -0.7
f/8 -0.7
f/11 -0.6
f/16 -0.6
f/22 -0.6

Samyang MF 85mm f/1.4 MK2 Sample Photos


Samyang MF 85mm f/1.4 MK2 Aperture range

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