Nikon's S-line 20mm f/1.8 ultra-wide prime — outstanding for astrophotography with minimal coma.
The Nikon Z 20mm f/1.8 S launched in 2019 as a premium ultra-wide prime in the Z-mount S-line. At 20mm f/1.8, it provides an ultra-wide perspective with a fast aperture ideal for astrophotography, landscape, and architectural photography.
Optically excellent — sharp across the frame with exceptionally well-controlled coma and sagittal flare, making it one of the best astrophotography lenses available. S-line designation ensures Nikon's highest optical standards. ARNEO and Nano Crystal coatings for flare control.
Nikon Z mount with 77mm filter thread. Weighs 505g. Full weather sealing. Minimum focus distance 20cm — excellent for environmental close-ups. OLED information display. Control ring and L-Fn button customisable.
Available used at mid-range prices. The coma control makes this one of the best astro lenses for any system. The Sony 20mm f/1.8 G is the main competitor — slightly lighter. Outstanding for landscape photographers who also shoot night skies.