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Samyang AF 14mm f/2.8 F Lens Review - Performance


Samyang AF 14mm f/2.8 F Performance

Central sharpness is excellent from f/2.8 right through to f/16, in fact moving up to the category of outstanding at f/8. It is still very good at f/22, which is an impressive performance.


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The edges are good at f/2.8 and f/4, improving to very good at f/5.6 and to excellent at f/8 and f/11. The standard is still very good at f/16 and f/22.

Samyang AF 14mm f/2.8 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 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 Nikon D850 using Imatest.

CA (Chromatic Aberration) is very tightly controlled throughout the range of apertures, both centre and edge. It will not be a problem, even under the most demanding conditions.

Samyang AF 14mm f/2.8 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 Nikon D850 using Imatest.


There is -3.09% barrel distortion present, but this is to be expected in an ultra-wide lens. If necessary, further correction can be made in-camera or in software, but for many subjects, this will not be an issue.

An ultra-wide lens will at best only have limited flare protection from the built-in lens hood, but the coatings are excellent and the lens is actually pretty much flare free, even against very bright sunlight. The hood does, however, offer some useful physical protection for the vulnerable front element.

Bokeh is not really a major expectation for an ultra-wide lens and sometimes the out of focus effects, especially in the corners, can be slightly harsh, but in normal circumstances the overall look is good. Considering the angle of view, this is very satisfactory.

Looking at vignetting, at open aperture the corners are some -1.7 stops darker than the centre, reducing to -1.5 stops at f/5.6, -1.4 stops at f/8 and -1.2 stops from f/11 onwards. This slight darkening of the corners can actually enhance many images and is fairly modest for such a wide lens.

Samyang AF 14mm f/2.8 Sample Photos


Samyang AF 14mm f/2.8 Aperture range


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du322 4
20 Aug 2018 6:48PM
I have the MF version of the Samyang 14mm. Aside from the addition of AF, how does the new version compare optically?
20 Aug 2018 11:24PM

Hopefully the above reviews will help! Optical quality is superb and AF certainly makes the lens faster to use.
BeyE 4
23 Sep 2018 10:25AM
The review says barrel distortion. But this can be corrected in Lightroom automatically right?
23 Sep 2018 12:01PM
Distortion can indeed be tackled in software and in many cases there will be profiles provided for specific lenses.
30 Dec 2019 6:10PM
In the "landscape" type of samples, most taken at F8, (e.g. 1st and 6th photos), I see the left side of the frame (the feft-most 1/3rd of the frame) significantly less sharp than the right side. In the 9th picture ("Industrial Landscape At Astley Green") I see the right side significantly sharper than the left, especially the leaves of the trees. At 14mm and F8, I would think this should not happen, right?
30 Dec 2019 8:16PM
It will depend on how much leaf movement there is as to how sharp or otherwise the leaves are. I can't remember if the day was still or windy, but some movement is likely. The only other factor will be the distance of various parts of the image from the lens and how that falls within the depth of field, or otherwise. Hope that helps!

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