Sigma has a history of fast, f/1.4 prime lenses for crop-sensor cameras. There’s a trilogy that springs to mind in the diminutive shapes of the 16mm, 30mm and 56mm f/1.4 DC DN Contemporary lenses. I first saw these in Canon EF-M mount but they’ve since become available in a wide range of Canon EF-M, Canon RF-S, Fujifilm X, L-Mount, Micro Four Thirds, Nikon Z DX and Sony E options. The new 12mm lens adds ultra-wide-angle potential to the mix, ideal for landscapes and cityscapes, architectural interiors, selfies, vlogging, travel, astrophotography and more besides. However, the mount options are relatively limited, so far only covering Canon RF-S, Fujifilm X and Sony E, with an ‘effective’ focal length of 18mm in full-frame terms (19mm for Canon). Even so, it aims to be one of the best wide-angle lenses and best landscape lenses for these cameras.
