The Rokinon 14mm f/2.8 for Canon is a fully manual super-wide angle prime lens. Fairly compact, It is a crazy sharp lens, even wide-open at f/2.8. It joined my bag in 2018, I don't use it very much. Although its hard to bungle the focus in super-wide angle lenses, I nonetheless miss focus about half the time. Still, its fun to use and the pictures it produces are very distinctive. Yes, one day, I'll give astro-photography a whirl this lens.