Bronica Zenzanon-E 45-90mm f/4-5.6

Manufacturer's Description:

"The PE 45-90mm F/4-5.6 Aspherical is the first wide angle zoom lens for the ETR-Si designed to be a “standard lens” covering the wide to mid telephoto range used most often for event photography. The PE 45-90mm delivers both distinguishably high image quality and versatility. It incorporates two Hybrid Aspheric elements."