Samyang AF 85 mm f/1.4 FE/RF review - Coma, astigmatism and bokeh

Have you rated your lenses yet?

Samyang AF 85 mm f/1.4 FE/RF

5 July 2019

Arkadiusz Olech

7. Coma, astigmatism and bokeh

Coma correction is exemplary in the area covering the APS-C sensor – even in the corners of the frame and at the maximum relative aperture it is really difficult to notice any deformations of diode images. In the corners of full frame coma starts to be visible but its level is far from bothersome and noticeably lower than in the case of the more expensive Sony FE 85 mm f/1.4 GM.

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 just 2.9% which we consider a very low value. What's interesting, the cheaper Samyang once again prevails over the Sony GM 1.4/85.

Please Support Us

If you enjoy our reviews and articles, and you want us to continue our work please, support our website by donating through PayPal. The funds are going to be used for paying our editorial team, renting servers, and equipping our testing studio; only that way we will be able to continue providing you interesting content for free.

- - - - - - - - - - - - - - - - - advertisement - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

The appearance of out-of-focus, blurry areas we find completely acceptable - on stopping down the aperture you can notice a lighter rim but the effect is hardly bothersome. Still mechanical vignetting remains a serious problem – it truncates the circle very distinctly by f/1.4 and remains quite visible by f/2.0.

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