Holy fuck they killed it . <| sep |> Looking to get an ultra wide to do landscapes and astrophotography shots . I ' m on a crop sensor canon 700 D . I ' m willing to go up to about 750 but every dollar beyond 500 ish would need to have justifiable improvements . I ' ve foundCanon 1018 mm f 4 . 55 . 6 Canon 1022 mm f 3 . 54 . 5 Sigma 1018 mm f 45 . 6 Sigma 1020 mm f 3 . 5 Sigma 816 mm f 4 . 55 . 6 Any others worth looking at ? This review reccomends the canon 1022 mm but is dated 2013 p h o t o g r a p h y w i d e a n g l e d s l r l ensesthecompleteguideThis review puts the 1022 mm at the bottom of the list dated 2016 and places the sigma 1020 mm f 3 . 5 and sigma 816 mm at the t o p v i d e o c a p t u r ecamerasbestwideanglelens 13077702 The 816 mm is tempting as the idea of capturing a huge scene is really appealing to me . Especially if I could capture a huge portion of the milky way in one shot . However the aperture also needs to be considered with the low light . How much is the aperture able to be mitigated by stacking ?