100° field of view

Create Beautiful Sunstars from f/2.8 to f/16

Compact metal construction

Aperture Range: f/2.8 to f/16

Manual Focus Operation

14 Elements in 12 Groups | 2x double side aspherical elements + 4x extra-low dispersion elements

Precise optical design retaining high image definition from the center to the corners

Minimal distortion and vignetting

67mm standard filter thread and supports the NiSi 100mm filter system

Yellow weather seal at the mount

The minimum focus distance is 0.2m/7.9″

Super Flare Resistance

Low coma for Astrophotography

Weights 364g/12.8oz