This is a non fisheye lens with the following specs:
- 11 groups of 15 elements
- 5 aperture blades
- rear 34mm filter
- minimum focusing distance 0.24m
- almost zero distortion design
- lens body size 70.1*96.5mm
- weighing only about 550g
- Sony E/Nikon Z/Canon RF and Leica L mount versions
