I tested the unique TTArtisan 100/2.8 lens. It has 2:1 macro and tilt-shift functions. What did I learn after using it? The lens has a lot of potential, but is hard to maneuver.

Everyone uses lenses. Whether they are the lenses on your camera or your phone’s lenses. But there are also specialty lenses with a set of screws on the side. These screws all you to rotate or angle the lens in different ways. How do these lenses work and what are they for?