Canon EF 8-15mm f4L USM Fisheye Zoom brand_Kawauso-Shoten The Camera Quick Shoe is

The Camera Quick Shoe is a low-profile quick-release plate system for cameras (or anything with a standard 1/4" thread)

The Hasselblad Super Wide C is a special-purpose camera designed to shoot ultrawide 6x6 format shots: it looks like a V-series Hasselblad

in case you'd rather use CR123s

Note that this lens can not focus to infinity: it is for high-magnification macro use only

Canon EF 8-15mm f4L USM Fisheye Zoom brand_Kawauso-Shoten The Camera Quick Shoe isA fisheye zoom lens sounds kind of wacky, but then again, it's pretty handy to have a full range of fisheye effects available with the turn of a ring. This Canon EF 8 15mm f4L USM goes from a circular image at 8mm to a full frame fisheye at 15mm, keeping a constant f4 aperture the whole way. In excellent condition, with clean glass and good function. Includes hood and caps.