The Samyang T-S 24mm f/3.5 ED AS UMC is a wide-angle, full-frame lens fitted with perspective control and tilt-shift functions. This makes it a good tool for architecture and landscape photography since perspective distortion can be corrected by tilting and/or shifting the lens.
The tilt mechanism enables tilting of the plane of focus so that an object that's at an angle to the lens can be rendered sharp while maintaining a shallow depth of field if so desired.
The shift mechanism enables correction of converging lines, useful in architecture photography.
Aperture control is done manually with the aperture ring since there is no aperture linkage between lens and camera body. Manual and Av exposure control is supported