PE 135mm F/4

This is a medium telephoto lens offering a minimum focusing distance of one meter allowing for narrow depth of field wide open, often a desirable effect in portraiture.
 
Lens Construction 4 groups / 6 elements
Angle of View 29.1
F stop range F/4 - 32 variable 1 stop (with half stop detents)
Diaphragm Fully Automatic
Minimum Focus Distance 1 meter / 3.3 feet
Shutter Seiko #0 (electronic control) plus T (time exposure) & B (bulb)
Filter Size 62mm screw - in type
Lens hood lens hood E for PE 135-250mm
Size 91.5mm x 82mm / 3.6 in x 3.2 in
Weight 750g / 26.7 oz.
35mm equivalent focal length 81mm