LensTip.com

Lens review

Panasonic G X VARIO 12-35 mm f/2.8 ASPH. P.O.I.S

18 March 2013
Arkadiusz Olech

7. Coma, astigmatism and bokeh

At 12 and 23 mm the coma is just slightly noticeable. At the maximum focal length it can bother you a bit more but even there it cannot be called high. Overall the performance in this category can be assessed in a very positive way.

Panasonic G X VARIO 12-35 mm f/2.8 ASPH. P.O.I.S - Coma, astigmatism and bokeh

The astigmatism is visible because the average difference between horizontal and vertical MTF50 function values is 9%. If you glance at the focal lengths you can find out that this aberration influences the most both ends of the spectrum and in the middle it is felt the least. That’s why that centre fares the best when it comes to the resolution at the maximum relative aperture.


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The light spread in defocused images of light points is more or less even. Near the maximum relative aperture there is no distinct rings or circles. After stopping down the lens to f/5.6 you can see a noticeable ring on the edge of the circle. Overall the appearance of blur areas is good and should be pleasant to the eye.

Panasonic G X VARIO 12-35 mm f/2.8 ASPH. P.O.I.S - Coma, astigmatism and bokeh