Hasselblad pioneered the medium format camera design. They offered extensive range of lenses by  Carl Zeiss, film backs, bodies, filters, lens hoods, wind cranks, motor drives, etc.

Hasselblad received world wide reputation with their space version of 500/ELM (right) capturing Apolo 11 mission, and man's first step on the moon.

See Hasselblad historical EU website for all the details you need, and all the books that have been written on the camera:

www.hasselbladhistorical.eu