Sigma 15mm f/1.4 DC DN: An Ultra-Wide That Doesn't Shoot Like One

On APS-C, Sigma's 15mm f/1.4 DC DN lands around a 22-24mm equivalent — wide enough to breathe, fast enough to shoot in the dark, and without the warped-face distortion that makes true ultra-wides a liability at close range. If you shoot events, weddings, or street work on a crop-sensor Sony, Canon, or Fujifilm body and you've been waiting for a single fast prime that handles both environmental context and available-light portraits, this is the lens that hasn't existed until now.