Samyang AF 50 mm f/1.4 FE II review - Coma, astigmatism and bokeh

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Samyang AF 50 mm f/1.4 FE II

5 August 2023

Maciej Latałło

7. Coma, astigmatism and bokeh

The Samyang AF 50 mm f/1.4 FE II doesn't have any problems with coma correction. The only effect you can notice is a slight increase of size when it comes to images of point-like sources of light as you move far away from the frame centre. Fortunately this effect is not especially pronounced so the performance of the lens in this category we assess very positively indeed.

Center, f/1.4	Corner APS-C, f/1.4	Corner FF, f/1.4

Center, f/2.0	Corner APS-C, f/2.0	Corner FF, f/2.0

Astigmatism, understood as an average difference between horizontal and vertical MTF50 function values, amounted to 6.9%, on borderline between low and very low level, a bit more than the result of the rival Sigma.

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The appearance of out-of-focus images seems to be quite pleasing to the eye. Light spread inside the circles is even and onion-ring bokeh, despite using aspherical elements in the lens, just slightly visible. Mechanical vignetting makes itself felt by f/1.4 and f/2.0 but, fortunately, it disappears on stopping down the aperture by 2 EV.

Center, f/1.4	Corner APS-C, f/1.4	Corner FF, f/1.4

Center, f/2.0	Corner APS-C, f/2.0	Corner FF, f/2.0

Center, f/2.8	Corner APS-C, f/2.8	Corner FF, f/2.8