The aperture refers to the size of the iris (hole) within the lens. The bigger the hole, the more light gets into the camera. Aperture is measured in F-stops. A low number like F1.8 or F2.1 means ...
The seven aperture blades on the lens give “smooth ... The AF supports subject tracking when paired with capable Canon cameras like the Canon R5. Samyang has designed the new AF 12mm F/2 ...