the barrel section of which also acts as a lens hood when used at 15mm. However, you need to remove it when shooting at shorter focal lengths. See our full Canon EF 8-15mm f/4L Fisheye USM lens review ...
It features a ‘Pulse’ stepping motor autofocus system that’s incredibly fast and essentially silent in operation, and there’s also an electromagnetically controlled diaphragm; the only catch is that ...