Fujifilm Fujinon XF 10-24 mm f/4R OIS review - Coma, astigmatism and bokeh

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Fujifilm Fujinon XF 10-24 mm f/4R OIS

20 August 2014

Arkadiusz Olech

7. Coma, astigmatism and bokeh

Coma is perhaps not the biggest problem of the tested lens but its influence on the images can be felt. Its level is the highest at both ends of the focal range, remaining almost imperceptible in the middle.

Fujifilm Fujinon XF 10-24 mm f/4R OIS - Coma, astigmatism and bokeh

The average level of astigmatism, understood as differences between horizontal and vertical MTF50 values, amounted to 7.1% and we consider it a good result. However that aberration changes noticeably along with the focal length change. It is the lowest, practically imperceptible, in the middle of the focal range and the highest at 10 mm where it amounts to 13%.

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Defocused images are moderately good. The circles of light feature a distinct rim and some onion rings as well. Additionally in the frame corners the light spread in circles is very uneven.