Your iPhone is already a very powerful camera with 4k recording capability. Thanks to various iPhone lenses on the market, you can do more with it. The Beastgrip 1.33x Anamorphic Lens combines with your Beastcage rig to let you take your filmmaking to the next level. It features a a built-in, custom bayonet mount machined from aluminum.
This lens changes the aspect ratio to a widescreen 2.4:1 to let you squeeze more horizontal information in your footage. It is ideal for landscape photography and more cinematic videos. The Beastcage for iPhone happens to be a versatile smartphone rig with 1/4″-20 mounts, an integrated shoe mount, and a 37mm threaded lens/filter mount.[where to get it]