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Lens review

Samyang 14 mm f/2.8 IF ED MC Aspherical

6 October 2009
Arkadiusz Olech

5. Chromatic aberration

While we could find some reasons to complain in the case of resolution, the results obtained for chromatic aberration are worthy of praise. Whether we use a full frame or a smaller sensor, chromatic aberration is small, clearly depicted on the graph below.

Samyang 14 mm f/2.8 IF ED MC Aspherical - Chromatic aberration

There’s one more thing to explain here. Careful Readers may be surprised by the fact that the aberration on the smaller sensor is larger than on a full frame D3x. That’s the effect of measuring units used by us. If the aberration were to be expressed in pixels, it would be larger on D200. The problem with expressing the aberration in pixels is that it is unfair to cameras with smaller cells. Our method consists in giving per cent values, obtained by dividing the results of the aberration in pixels and the size of the frame also in pixels. This allows us to separate from the size of pixels, but also makes the measurements on a full frame divided by a larger number, and the result giving a smaller per cent result, as you can see on our graph.


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And this is not unreasonable, as it may seem at the first glance. The result in per cents doesn’t only allow us to separate from the size of pixels, but also treat the problem as a whole. It tells us how the aberration will bother us when looking at the whole picture, and not when viewing it 1:1. So, when we view 1:1 clippings, the aberration will seem larger on D3x than D200. However, when we display the whole picture, it will be harder to notice it on a full frame, and that’s what our graph shows.

Samyang 14 mm f/2.8 IF ED MC Aspherical - Chromatic aberration