PE 45-90mm F/4-5.6 Aspherical

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.
 
Lens Construction 10 groups / 11 elements
Angle of View 81° - 46°
F stop range F/4 - 32 variable 1 stop (with half stop detents)
Diaphragm Fully Automatic
Minimum Focus Distance 19.7 inches @ 90mm setting
Shutter Seiko #0 (electronic control) plus T (time exposure) & B (bulb)
Filter Size ř95mm screw - in type
Lens hood Flower-type included
Size 114.3mm x 98mm / 4.5 in x 3.9 in
Weight 510g / 18 oz.
35mm equivalent focal length 27mm-52mm