Tele-Variogon 4/80-240mm

 

OPTO-MECHANICAL DATA

(with lens focused at infinity)

Lens Elements, Groups

14, 9

Filter Mounting Thread

M 82 X 0.75

Max. f/#

22

Push-On Filter Size

85mm

Max. Outer Diameter

86mm

Weight

1635g

Overall Length

196mm

 

IMAGE DATA

(with lens focused at infinity)

Recommended Format (negative) Size

24 X 36mm

 

OPTICAL DATA

(with lens focused at infinity)

Effective Focal Length (F')

81.7mm to 243mm

Back Focal Length (S'F')

39.4mm

Principal Point Separation (HH')

_

Shortest Image Distance (S'O')

1.8m