Samsung NX 45 mm f/1.8 2D/3D review - Coma, astigmatism and bokeh

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Samsung NX 45 mm f/1.8 2D/3D

13 June 2013

Arkadiusz Olech

7. Coma, astigmatism and bokeh

Unfortunately we cannot praise the Samsung for the coma correction. It is clearly visible at the maximum relative aperture and it doesn’t disappear on stopping down by 1 EV. You can say it does contribute to the worsening of the image quality on the edge of the frame.

Samsung NX 45 mm f/1.8 2D/3D - Coma, astigmatism and bokeh

The astigmatism looks much better. The average difference between horizontal and vertical MTF50 function values amounted to just 1.4% which is an excellent result.

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Defocused circles of light look very nice as well. Apart from a slight rim near the edge they are practically flawless. The light spread is even, without any circular rings or local extremes. The blur, provided by the lens, should be perceived as pleasing to the eye.