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