SIGMA ultra wide ART 20 mm
Fanatics of ultra-wide optics should observe Sigma's most recent f/1.4 Art-arrangement focal point, as the new 20mm f/1.4 DG HSM Art is their broadest one yet and along these lines a prime decision for scenes just as astrophotography. Intended for full-outline DSLRs, the Sigma 20mm f/1.4 Art offers a 94.5-degree field of view for a decent, ultra-wide viewpoint, and its amazing close-centering capacity ought to take into consideration some sensational arrangements. The focal point is perfect with APS-C cameras, also, offering a roughly 30mm successful field of view.
On a full frame camera, even at f/1.4, the Sigma 20mm f/1.4 inspires with phenomenal focus sharpness. Of course, corners show perceptible delicate quality at f/1.4, however a decent segment of the casing, generally, stays sharp. Halting down a bit, particularly to around f/2.8, truly hones things up around the edges. The focal point stays sharp all through the opening reach, even into the littler gaps. Slight diffraction related delicate quality show up at f/16.
SIGMA 20 mm f/1,4 DG HSM Art Nikon
SIGMA 20 mm f/1,4 DG HSM Art Sony E
SIGMA 20 mm T1,5 FF EF-mount