Specifications:

Manufacturer Cosina
Model 100-300 mm f/5.6-6.7
Lens style Telephoto zoom
Focal length 100 - 300 mm
Maximum aperture f/5.6 - 6.7
Angle of view 24 - 8 o
Closest focusing distance 1.5 m
Maximum magnification 1:3.9
Minimum aperture 32
Number of diaphragm blades 8
Auto focus type AF
Lens Construction 8 elements / 10 groups
Filter diameter 55 mm
Macro
Mount Pentax K
Dimensions 69 x 137.5 mm
Weight 500 g