Sigma 15mm f1.4 DG DN Diagonal Fisheye | Art - L-Mount Brand_Viltrox Citing evidence to suggest that

Citing evidence to suggest that in the Canadian Rocky Mountain national parks alone

Versatile carrying - two-way sling shoulder strap across the chest

the Nikkor AF-S DX 18-300mm f3

shooting point light sources at maximum aperture would normally produce sagittal coma flare

Sigma 15mm f1.4 DG DN Diagonal Fisheye | Art - L-Mount Brand_Viltrox Citing evidence to suggest thatThe Sigma 15mm f1. 4 DG DN Diagonal Fisheye Art has achieved excellent point image reproducibility and high resolution by correcting various aberrations, especially sagittal coma flare. The lens is capable of handling astrophotography, which demands particularly high quality performance, even when wide open. Unlike conventional fisheyes, the SIGMA 15mm F1. 4 DG DN DIAGONAL FISHEYE Art is exceptionally sharp across its entire 180 angle of view and