LensTip.com

Lens review

Venus Optics LAOWA 9 mm f/2.8 ZERO-D

20 April 2018
Arkadiusz Olech

6. Distortion

The Fujifilm camera bodies often correct distortion in JPEG files so below we present the appearance of our chart both in JPEG and RAW format. Don’t expect to notice any distinct differences between these images because the Laowa doesn’t have any contacts. It means a camera body simply doesn’t know what is attached and how to correct it. Our measurements confirm our speculations. For the JPEG file we saw moderate barrel distortion of −1.80%, and for RAW file that value was −1.73%. Both results are in accordance with each other within the margin of error.

Like in our latest test of the Sigma A 14–24 mm f/2.8, we decided to move the focus ring to infinity and stop the aperture down significantly while taking photos of our distortion testing chart – all that was done to get a sharp image even though the lens was positioned very close to the chart. In that case the distortion amounted to −1.06%. As you see you don’t get literally ZERO-D but still you have to admit the lens corrects that optical aberration quite well despite such a wide angle of view.

As we’ve already mentioned the field of view – our photos of starry sky allowed us to measure it very precisely. A 9 mm rectilinear lens on the APS-C sensor (1.5x multiple) should have a field of view of 115.2 degrees. The Laowa producers state in the specification that the field of their lens is 113 degrees. Our measurements produced a value of 113.6 degrees, with the measuring error amounting to 0.1-0.2 of a degree. As you see the producers were right and the field of view of their lens is even a tad wider than declared.


Please Support Us

The coronavirus crisis has been adversely affecting many businesses and, sad but true, ours is not an exception. Despite that difficult situation we would like to preserve continuity and high quality of publications available on all our websites. Still, we are now aware it might be impossible without additional financial help. That's why we would like to ask all those who visit, read, and care about Optyczne.pl, LensTip.com i Allbinos.com for support - it's enough you send us a small sum of money via PayPal. If a lot people decide to support our websites we think we'll stand a chance and survive next months without any lasting harm. We count on your support and understanding, stay safe and be healthy.

- - - - - - - - - - - - - - - - - advertisement - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Fujifilm X-T2, JPEG
Venus Optics LAOWA 9 mm f/2.8 ZERO-D - Distortion
Fujifilm X-T2, RAW
Venus Optics LAOWA 9 mm f/2.8 ZERO-D - Distortion