Nikon 80-200 parts
Zoom depth-of-field collar
Filter ring and rear mount
Focusing helical and rear optical assembly
Main casting attachment ring
Objective lens and helical mount
Aperture blades on rear optical assembly
Rear optical assembly. Large flat is the aperture setting arm.
Aperture ring with corresponding depth-of-field colored numbers.
Successful long exposure night test: nice and sharp.
Night test: note the airplane's lights behind the tree and star trail.