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Samyang AF 85mm f/1.4 RF Lens Review - Performance

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Samyang 85mm f/1.4 RF Performance

Central sharpness is excellent all the way from f/1.4 through to f/11. It is still very good at f/16. The edges are very good at f/1.4 and f/2, excellent from f/2.8 to f/8 and very good from f11 to f/16.


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Samyang AF 85mm f/1.4 RF 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 RP using Imatest. Want to know more about how we review lenses?


CA (Chromatic Aberration) is approaching zero at the centre and is still very well controlled at the edges. If further correction is required then this can be achieved with software.


Samyang AF 85mm f/1.4 RF 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 RP using Imatest.


Pincushion distortion can be measured at just +0.17%, which is very close to being rectilinear. Even with architectural subjects, straight lines at the edge of the image field will remain straight lines. If further correction is required, which is probably unlikely for most photography, then this can be done in software.

Bokeh is superb, beautifully smooth, which is a big plus for a portrait lens, especially when coupled with the high sharpness.

Flare seems to be well under control. It is possible to create artefacts in very extreme conditions, but even then the lens sees past this with an excellent degree of clarity and with minimal reduction in contrast.

Vignetting is visible at open aperture, not necessarily a bad thing as this darkens the corners and concentrates our eyes on the central part of the image. Once closed down, vignetting becomes very modest indeed and should not be readily noticeable.

Samyang AF 85mm f/1.4 RF Sample Photos


Samyang AF 85mm f/1.4 RF Aperture range

You can view additional images in the Equipment Database, where you can add your own review, photos and product ratings.

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ChrisV 15 2.3k 26 United Kingdom
10 Jun 2020 11:43AM
Looks like this is based on the Sony FE design. Would be interesting to compare between the marques - the Sony of course benefitting from IBIS, so there’s and obvious immediate advantage there.

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