Fujifilm Fujinon XF 56 mm f/1.2 R review - Coma, astigmatism and bokeh

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Fujifilm Fujinon XF 56 mm f/1.2 R

11 December 2014

Arkadiusz Olech

7. Coma, astigmatism and bokeh

The coma is not corrected in a perfect way and the thumbnails, shown below, are the proof. Still its level can hardly be called high – it is much closer to medium values.

Fujifilm Fujinon XF 56 mm f/1.2 R - Coma, astigmatism and bokeh

The astigmatism correction is beyond reproach for a change. An average difference between horizontal and vertical MTF50 values amounted to 5.5% which we consider a moderate level.

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We also have no reservations when it comes to the appearance of defocused images. The ring on the edge of the circle, connected to a slight level of spherical aberration, disappears after stopping down the aperture to f/1.8. In other cases the light spread is very even. We are a bit worried about the aperture blades, though – seven blades is not enough to get a full circle, it is very clearly seen in our photos. I really cannot understand why a top-of-the-range portrait lens wasn’t given an aperture with 9-10 diaphragm blades.