Optical lens fitting for wide-angle photography

An optical lens fitting (100) for wide-angle photography, comprising: an optical apparatus (1), comprising at least one wide-angle lens (11), and used for viewing a frame larger than the viewing angle range of a photographic apparatus (21), and for introducing a viewfinding light ray (110) into the photographic apparatus; an outer shell apparatus (2), arranged outside the optical apparatus and not interfering with the viewing angle range of the wide-angle lens, and used for supporting the optical apparatus and for separating the viewfinding light ray and an external non-viewfinding light ray, in order to prevent the non-viewfinding light ray from interfering with the optical path of the viewfinding light ray; and a fixing apparatus (3), used for attaching the optical lens fitting to a matching terminal (200) and not interfering with the viewing angle range of the wide-angle lens, in order to facilitate the joint use of the optical lens fitting and the photographic apparatus, and thereby implement large viewing angle range photography. The requirements of a user for wide-angle photography are thereby quickly met, greatly reducing usage costs for the user and improving the practical experience of the user.