Xenar 2.8/45mm

 

OPTO-MECHANICAL DATA

(with lens focused at infinity)

Lens Elements, Groups

4, 3

Filter Mounting Thread

M 29.4 X 0.4 or *M 38 X 0.75

Max. f/#

22 or *16

Push-On Filter Size

50.5mm or *43mm

Max. Outer Diameter

54mm or *32mm

Weight

110g or *230g

Overall Length

33mm or *54mm

 

IMAGE DATA

(with lens focused at infinity)

Recommended Format (negative) Size

28.1 X 28.6 mm or *24 X 36 mm

 

OPTICAL DATA

(with lens focused at infinity)

Effective Focal Length (F')

47.4mm or *45.4mm

Back Focal Length (S'F')

38.1mm or *36mm

Principal Point Separation (HH')

1.6mm or *1.1mm

Shortest Image Distance (S'O')

1m or *0.9m