What are the types of anamorphic lens for photography?

anamorphic lens for photography mainly include movie lenses and fisheye lenses, which are mainly used to achieve wide frame shooting and special visual effects.  ‌
Movie Transfiguration Camera
Mainly used for professional film shooting, it compresses/stretches the image through cylindrical mirrors or prisms to achieve a wider viewing angle range. The main types include:
Pre distortion group: By rotating the mirror group to achieve horizontal compression of the image (active axis horizontal), vertical elliptical light spots and horizontal glare are generated, commonly seen in movie lenses.  ‌
Post distortion group: using prisms to achieve vertical stretching of the image (active axis vertical), commonly used in mirrorless cameras and DSLR lenses.  ‌
fisheye lens
By using a special optical structure to achieve 180 ° or wider viewing angles, the edges of the image exhibit strong distortion effects:
Panoramic fisheye lens: with a viewing angle of 180 °, the image almost covers the entire scene, and the edge objects appear extremely curved.  ‌
Partial fisheye lens: viewing angle of 100-130 °, with slight but still noticeable bending effect.  ‌
Both types of lenses have significant distortion characteristics and need to be selected according to shooting needs: movie distortion lenses are suitable for pursuing artistic wide format images, while fisheye lenses are suitable for distortion aesthetic creation in special scenes.