Traditional Culture Encyclopedia - Photography major - Why doesn't my wide angle work on some apps?

Why doesn't my wide angle work on some apps?

Some applications don't support it.

Wide-angle refers to a wide-angle lens, which is a photographic lens with shorter focal length, larger viewing angle, longer focal length and smaller viewing angle than the standard lens.

Wide-angle lens is also called short lens, and the focal length of the lens is obviously smaller than the image field diameter (diagonal length of negative film), which is about 6 ~ 35mm;. The viewing angle is larger than the standard lens, about 53 degrees or more, until 220 degrees. The relative caliber is generally small. Wide-angle lens came into being after the appearance of rapid direct light lens in11960s, and has become an important category of photographic lens after various evolutions.