Venus Optics LAOWA 7.5 mm f/2 MFT review - Distortion

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Venus Optics LAOWA 7.5 mm f/2 MFT

9 October 2017

Arkadiusz Olech

6. Distortion

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The tested lens doesn’t have any contacts so it is not recognized by Olympus and Panasonic camera bodies. It means no distortion correction is activated; when images are converted from RAW to JPEG format they aren’t cropped at all. Small wonder our distortion measurements were exactly the same for both types of files and amounted to −2.45%. With such a big angle of view it is a moderate result but we have seen lower distortion levels during tests of primes with similar angle of view and designed for full frame (e.g. the Irix 2.4/15).

We could measure the field of view of the lens, having photos of the sky at our disposal which we took during our test and presented in the sample shots chapter. The result we got amounted to 109.6 degrees with a margin of error of 0.1 of degree. It’s just slightly lower than 110 degrees declared by the producer and it means that the focal length of the lens is really between 7 and 8 mm.