7.5mm F2.8 is an ultra-wide angle fisheye lens withcompletely manual operation. Optical system consists of 11 elements in 10groups. It is designed for APS-C sensor size cameras. With an angle of view of180° this lens produces a dramaticly curved perspectivethat bends straight lines and exaggerates the distance between subjects. Itallows to capture whole scenery and architecture into the frame and composeshots with surprisingly interesting look. This lens can also be used forfull-screen stitching immersive panorama shooting as well as VR materialcollection.