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Samyang AF 24mm f/2.8 FE Review - Performance

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Samyang AF 24mm f/2.8 FE Performance

Sharpness is crisp and precise and it is no surprise to see that centrally it rates as excellent from f/2.8 all the way through to f/16. Diffraction results in a slight drop at f/22, but even here it is still very good.

The edges are a close match, being excellent from f/2.8 to f/11 and still very good at f/16 and f/22. Even using the full frame image sharpness is really even across the frame and every aperture is totally usable.

Samyang AF 24mm f/2.8 FE 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 Sony A7 III using Imatest.

 

CA (Chromatic Aberration) is virtually absent at the centre and still very well controlled at the edges. Even under the most arduous conditions CA will not be a problem.

Samyang AF 24mm f/2.8 FE 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 Sony A7 III using Imatest.

 

Distortion is remarkably low for an ultra-wide lens. It measures at +0.04% Pincushion, going against the expectation that ultra-wides tend to suffer from barrelling. However, at this low level of measurement to all intents and purposes this is a rectilinear design and straight lines will remain as straight lines, even at the extreme edges of an image.

The very shallow lens hood has been mentioned already and as expected it is possible for flare to catch out the lens. This presents itself as a haze and lowering of contrast.

Bokeh is not really a major expectation for an ultra-wide lens, but in fact f/2.8 is enough to make some selective focusing possible. The lens has pleasing out of focus areas and delivers smooth bokeh effects.


Samyang AF 24mm f/2.8 FE Sample Photos

 

Samyang AF 24mm f/2.8 FE Aperture range

 


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Comments


11 Jun 2018 9:33AM
is the continuous AF silent in video with A7S ? We need a test with CDAF bodies
11 Jun 2018 12:06PM
is the AF silent in video with A7III? 35mm F2.8 was pretty loud.
11 Jun 2018 1:11PM
Hi, as a A7 III user I would highly appreciate some more information on how the AF-C performance is in comparison to native Sony lenses. Thank you very much in advance!
11 Jun 2018 1:48PM
Thanks for the review, but did you forget the vignetting? The samples show a pretty hefty vignetting, which is visible even at f/8, but you don't even mention it.
11 Jun 2018 4:40PM
I can specifically answer the question regarding vignetting. This is something that's quite common with ultra-wide lenses and not necessarily much of a negative point. Very often an image can benefit from some corner darkening, and it's a darkroom technique that was at one time very widely used. However, it is a lens defect and shows up in areas of blue sky particularly. Compact lenses are particularly prone to vignetting, As regards AF noise I would say it's, subjectively, very quiet but there were no comparable lenses in my possession at the time to compare it directly. Always a good idea to try out in a shop if possible to check specific requirements.
Xeon 2
21 Jun 2018 5:36PM
How does this lense compare to the sony 28mmf2 IQ wise? Also, how should both MtF charts be compared?
21 Jun 2018 6:33PM
It depends upon the resolution of the cameras used. Two 24MP cameras could be compared directly, but if the resolutions vary then we need to look at how the lens resolves compared to the theoretical maximum. Thus the terms used such as "excellent", "very good" and so on form a comparison guide from lens to lens. Not perfect, but as we can't use one definitive camera body for all lenses, especially as cameras evolve, then the best way we can express the standard of an optic. Hope that helps!
Xeon 2
21 Jun 2018 8:26PM
Thank you for the clarificarion, but why are the values different in both reviews?
Which lense produces sharper images S28f2 or the Samyang?
Thank you!
21 Jun 2018 11:19PM
The Sony review is an older one which does not quote actual figures. The descriptions, such as "excellent" are as close as possible describing old vs new but the difference in cameras doesn't help either. I would download some images from the reviews and put them through your usual routine, adding sharpening as you see fit, and then you should be able to judge how they compare. Of course these are only one sample of each lens, so no test result is absolute, but it should yield some useful information that can show the characteristics of a particular lens.
How is it that Ephotozine's results and Lenstip's results are so wildly different? I don't know which to believe.
4 Feb 2019 3:31PM
Well, I reported what I found and I'm sure the other reviewer reported what was found as well. Different cameras were used, different lens samples were used, so some variation is entirely possible. On the basis of the sample I received we get the results as reported in my review. Unfortunately it would not be feasible to test half a dozen samples of every lens, which is probably the only way to spot sample variation. Hope that helps!
9 Feb 2019 5:54PM
It would be really great to see the results on sensors with smaller pixel pitch!
- Is the lens sharp enough across the frame for large prints from the A7R2/3 ?
- Is it sharp enough for the 24mp Aps-c bodies? How does the AF work with those cameras? It would make an excellent small lens for street photography on the A6xxx bodies...

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