| sent on May 20, 2018
Pros: Construction, value for money, sharpness.
Cons: Nothing.
Opinion: Having to buy an optic with this focal excursion, for the Nikon d850, I wanted to conduct a bit of testing comparing the Nikon 14 24 and the Sigma Art 14 24, of course without any scientific claim, but making sure to look for those that could be the limits for The use I want to make. As weight and dimensions seem to me roughly equivalent, and both are presented with a prominent frontal lens to which you have to be very careful; I leave to others the considerations on Tropicalizzazioni, and anti dirt/fat treatments, but some constructive measures make it convenient, and of course, the more a lens is new and more technologically advanced (I remind you that the Nikon 14 24 came out in 2007 for 24 MPX, and at Apparently there is no intention to update it). I first tried the Nikon because I wanted that but the impression I immediately had is that it did not have a resolution power capable of solving a sensor from almost 50 mpx... then I went to an event where you could try the material nital , and I tried it again: the same situation! You have a feeling of homogeneous slight blur that accentuates the edges, where in addition are added important chromatic aberrations (it is true that it resolves in post, but here we are talking about the optics). I tried then the Sigma, and it seemed much sharper (I speak of power resolution, ie the ability to solve the fine detail that makes you appreciate the potential of the sensor; unable not test on a target, I tried to include subjects with plot , situations of light indentation, lines, at different apertures, as well as I had done with the Nikon). The chromatic aberrations on the Sigma seem to me much more contained and for this in post you can fix it better and sooner. A little more complex speech for distortions: at first glance, especially if you include straight lines in the foreground, they both seem to suffer a bit of barrel; In fact when you open the file in Photoshop, it is obvious that even in this the Sigma wins easy: The Sigma in the central areas and even further, it is straight (even applying the lens correction, you notice that only move the edges); Different story for the Nikon file; In this case we can see that the distortions start gradually from the center, to the edges (where, again, a considerable chromatic aberration is added), and this makes a correct correction much more complex. At more closed apertures the differences of chromatic aberrations and distortions, are reduced but do not disappear, while on the sharpness, the Sigma remains evidentememte much higher. In the end the choice is relapsed on the Sigma: In addition to the practical advantages of yield and constructive sturdiness, a nice saving of almost 800 euros (both official nital the first and mtrading the second). Good photos to all! |