Rokinon 8mm f/3.5 Fish-Eye CS
Rokinon 8mm f/3.5 Fish-Eye CS is a manual focus fisheye lens for aps-c cameras.
Has 6 aperture blades, this number of blades are commonly used. Having rounded blades provides out of focus circle shape closer to a circle. Average brightness in this league Full frame equivalent focal length is 12.0 mm.
75 mm long, requires consideration if you want to carry in the camera bag. Weights 443 grams so plan ahead, carry only if really necessary.