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Lens review

Panasonic G X VARIO PZ 14-42 mm f/3.5-5.6 ASPH. P.O.I.S.

11 June 2012
Arkadiusz Olech

7. Coma, astigmatism and bokeh

When it comes to the coma, this off-axis aberration is corrected well. If you look at the frame corner its influence is visible at every focal length but the deformations of the point-like images of a diode are slight so it would be difficult to complain here.

Panasonic G X VARIO PZ 14-42 mm f/3.5-5.6 ASPH. P.O.I.S. - Coma, astigmatism and bokeh

In the case of the astigmatism we can say similar things as in the case of the coma. The average difference between the vertical and horizontal MTF50 function values amounted to just 6% which is a good result. You can also mention the fact that a small decreasing tendency of this aberration can be noticed along the increase of the focal length.


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Photos below allow you to assess off-focus images as well. They are probably not perfect because defocused circles feature significant heterogeneities of the light layout; they seem to become more and more pronounced on stopping down.

Panasonic G X VARIO PZ 14-42 mm f/3.5-5.6 ASPH. P.O.I.S. - Coma, astigmatism and bokeh