LensTip.com

Lens review

Samyang XP 14 mm f/2.4

25 September 2017
Arkadiusz Olech

6. Distortion

Let’s start with the rivals of the tested lens and their performance in this category. The way the older Samyang 14 mm f/2.8 ED AS IF UMC fared could be described only as a major catastrophe. Already on the APS-C/DX the level of this aberration was −5.44%. On full frame the result amounted to −7.21% but it would be actually closer to −10% if distinct moustache distortion didn’t intervene.

The Canon EF 14 mm f/2.8 USM II during its test proved that it is possible to correct distortion in a sensible way without any help from moustache deformations. On the APS-C sensor its distortion level was just −1.23%, and on full frame it amounted to −3.18%.

The Irix 2.4/15 presented itself even better as its construction was optimized with distortion in mind. On the smaller APS-C/DX sensor it got very slight ‘barrel’ of −0.50% and on full frame that lever increased to −2.68%. When compared to that, the results of the Samyang 2.4/14 seem average. There is a huge improvement when compared to the older model but still the lens lags behind some of its rivals. On the APS-C/DX sensor of the Nikon D7000 the Samyang had barrel distortion of −2.26% which increased to −4.74% when you passed to full frame.


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During our Samyang test we also photographed the sky so we used these photos to measure the real field of view provided by the lens. In this case it amounts to 114.5 degrees within a margin of error amounting to 0.2 of a degree. That result is in accordance with the declaration of the producer and with the field stemming from the rectilinear mapping at the 14 mm focal length.

Nikon D7000, 14 mm
Samyang XP 14 mm f/2.4 - Distortion
Nikon D3x, 14 mm
Samyang XP 14 mm f/2.4 - Distortion