LensTip.com

Lens review

Fujifilm Fujinon XF 10-24 mm f/4R OIS

20 August 2014
Arkadiusz Olech

8. Vignetting

Like the distortion, the vignetting is corrected very efficiently on JPEG files – so efficiently, in fact, that it would be completely counterproductive to show any sample photos of that format. The level of that aberration is simply imperceptible. The biggest brightness loss in the corners you get in the centre of the focal range where the lens loses 19% of light (-0.61 EV). At both ends of the focal range the vignetting amounts to about 15% (-0.50 EV) with the lens wide open.

The real vignetting performance can be seen only when you examine RAW files.

Fujifilm Fujinon XF 10-24 mm f/4R OIS - Vignetting


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At a very difficult combination of 10 mm focal range and f/4.0 aperture the vignetting reaches a level as high as 49% (-1.93 EV). It is a very high value. By f/5.6 the aberration decreases to 38% (-1.38 EV) and by f/8.0 it drops to 33% (-1.16 EV). Further stopping down lowers its level by 1% at most. Still you should notice one fact: the light fall-off gradient on the very edge is really high - only the corners seem to be very dark. As a result, after distortion correction and cropping the image to the size of JPEG files, the vignetting might prove to be a much less serious problem than it appears at first.

In the middle of the focal range the vignetting is 32% (-1.13 EV). That level is significant and easy to spot but not as bothersome as the result we got at 10 mm. On stopping down to f/5.6 that aberration decreases to 26% (-0.89 EV) and by f/8.0 it reaches 25% (-0.83 EV).

The best situation can be noticed at 24 mm where, at the maximum relative aperture, you lose 26% (-0.86 EV) of light in the corners. It is already a moderate level. Unfortunately the stopping down is not very effective – by f/5.6 the vignetting still amounts to 22% (-0.70 EV) and by f/8.0 it is 19% (-0.60 EV).

Fujifilm Fujinon XF 10-24 mm f/4R OIS - Vignetting

Fujifilm Fujinon XF 10-24 mm f/4R OIS - Vignetting

Fujifilm Fujinon XF 10-24 mm f/4R OIS - Vignetting