Panasonic G Macro 30 mm f/2.8 ASPH. MEGA O.I.S. review - Coma, astigmatism and bokeh

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Panasonic G Macro 30 mm f/2.8 ASPH. MEGA O.I.S.

17 March 2016

Arkadiusz Olech

7. Coma, astigmatism and bokeh

The Panasonic G Macro 30 mm f/2.8 ASPH. MEGA O.I.S. doesn’t have almost any problems with the coma correction. Even in the corner of the detector at the maximum relative aperture the image of the diode is almost point-like and deformations - reduced to the minimum.

E-M10, 30 mm, f/2.8, center	E-M10, 30 mm, f/2.8, corner

E-M10, 30 mm, f/4.0, center	E-M10, 30 mm, f/4.0, corner

The astigmatism, understood as an average difference between horizontal and vertical MTF50 function values, amounted to 6.3%. It is not a result that should bother you…

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The circles of light in blurry areas look sensibly well but nothing more. The distinct lighter rim is very annoying and its intensity increases with the stopping down. Fortunately by f/2.8, where it is the easiest to get out-of-focus areas in our photos, the rim is the weakest.

E-M10, 30 mm, f/2.8, center	E-M10, 30 mm, f/2.8, corner

E-M10, 30 mm, f/4.0, center	E-M10, 30 mm, f/4.0, corner

E-M10, 30 mm, f/5.6, center	E-M10, 30 mm, f/5.6, corner