From 1969 to 1981, Rollei made professional Studio Flash Systems:
the E 250, E 1250 and E 5000 series. Rollei supplied a wide array of accessories, including spot and wide reflectors, soft boxes, a professional flash tripod and support system on wheels.
For me it was my first studio flash sytem to use , in the 1970's at the Dutch School for photography in Apeldoorn. Rollei sponsored the school with various camera and studio systems.