LensTip.com

Lens review

Samyang 7.5 mm f/3.5 UMC Fish-eye MFT

12 September 2011
Arkadiusz Olech

7. Coma, astigmatism and bokeh

The coma control is splendid – so splendid that if I changed the position of these thumbnails randomly nobody would be able to say with a 100% certainty which diode image came from the frame centre and which from the corner.

Samyang 7.5 mm f/3.5 UMC Fish-eye MFT - Coma, astigmatism and bokeh

We don’t have to worry about the astigmatism either. In the case of the tested lens it amounts to 2.9% so is really negligible.


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The photo below is supposed to tell something about fuzzy images the tested lens can provide. In the case of a fisheye instrument it is rather just an interesting tidbit, showing how out-of-focus diode image, positioned in the same frame corner can be deformed.

Samyang 7.5 mm f/3.5 UMC Fish-eye MFT - Coma, astigmatism and bokeh