But, at 14mm from the mount excluding the mount and hood, the lens is actually smaller than the average width of the index ...

Best overall The best lens for astrophotography overall The Sigma 14mm f/1.4 DG DN Art lens is great for astrophotography thanks to its speedy autofocusing, but it can handle hybrid shooting as well.

Lens The lens and aperture are key factors in determining depth of field. Lenses are known by their focal lengths - 14mm, 50mm ... lengths give a wide angle of view and long focal lengths give ...