LensTip.com

Lens review

Samyang 100 mm f/2.8 ED UMC MACRO

22 August 2015
Arkadiusz Olech

7. Coma, astigmatism and bokeh

When it comes to the coma there are no reasons to complain but the performance can hardly be called perfect either. In the corners of full frame the image of the diode is a bit deformed.

Center, f/2.8 Corner APS-C, f/2.8 Corner FF, f/2.8
Samyang 100 mm f/2.8 ED UMC MACRO - Coma, astigmatism and bokeh Samyang 100 mm f/2.8 ED UMC MACRO - Coma, astigmatism and bokeh Samyang 100 mm f/2.8 ED UMC MACRO - Coma, astigmatism and bokeh
Center, f/4.0 Corner APS-C, f/4.0 Corner FF, f/4.0
Samyang 100 mm f/2.8 ED UMC MACRO - Coma, astigmatism and bokeh Samyang 100 mm f/2.8 ED UMC MACRO - Coma, astigmatism and bokeh Samyang 100 mm f/2.8 ED UMC MACRO - Coma, astigmatism and bokeh


The astigmatism, understood as an average difference between horizontal and vertical MTF50 function values, amounted to 4.1%. It is a slight value which shouldn’t bother you at all.


Please Support Us

The coronavirus crisis has been adversely affecting many businesses and, sad but true, ours is not an exception. Despite that difficult situation we would like to preserve continuity and high quality of publications available on all our websites. Still, we are now aware it might be impossible without additional financial help. That's why we would like to ask all those who visit, read, and care about Optyczne.pl, LensTip.com i Allbinos.com for support - it's enough you send us a small sum of money via PayPal. If a lot people decide to support our websites we think we'll stand a chance and survive next months without any lasting harm. We count on your support and understanding, stay safe and be healthy.

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

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

The blur provided by the Samyang 2/100 is pleasing to the eye. The appearance of defocused circles of light confirm that much as they come without any noticeable local extremes. The only thing that might make us complain a bit is a distinct truncation of the circle in the full frame corner at the maximum relative aperture.

Center, f/2.8 Corner APS-C, f/2.8 Corner FF, f/2.8
Samyang 100 mm f/2.8 ED UMC MACRO - Coma, astigmatism and bokeh Samyang 100 mm f/2.8 ED UMC MACRO - Coma, astigmatism and bokeh Samyang 100 mm f/2.8 ED UMC MACRO - Coma, astigmatism and bokeh
Center, f/4.0 Corner APS-C, f/4.0 Corner FF, f/4.0
Samyang 100 mm f/2.8 ED UMC MACRO - Coma, astigmatism and bokeh Samyang 100 mm f/2.8 ED UMC MACRO - Coma, astigmatism and bokeh Samyang 100 mm f/2.8 ED UMC MACRO - Coma, astigmatism and bokeh
Center, f/5.6 Corner APS-C, f/5.6 Corner FF, f/5.6
Samyang 100 mm f/2.8 ED UMC MACRO - Coma, astigmatism and bokeh Samyang 100 mm f/2.8 ED UMC MACRO - Coma, astigmatism and bokeh Samyang 100 mm f/2.8 ED UMC MACRO - Coma, astigmatism and bokeh