The photographic lens Laowa 12mm F2.8 Zero-D with Canon RF-mount, a truly wide-angle prime featuring a rectilinear optical design, is specifically meant to limit distortion for clear and accurate portrayals of landscapes and architectural subjects.
The Sirui 35mm f/1.8 Anamorphic 1.33x lens produces an image circle large enough to cover APS-C sensors. Since the field of view is anamorphous, it is wider than any normal 50mm lens.
The Panasonic Lumix G Vario 7-14mm f / 4 ASPH is a wide-angle lens for 4/3 format. Focusing is achieved through the AF target motor (not ultrasonic), there is image stabilization.