 |
|
Tele-Variogon
1:4 / 80-240 mm |
 |
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')
|
131.3mm
|
|
Back Focal Length
(S'F')
|
37.2mm
|
|
Principal Point
Separation (HH')
|
82mm
|
|
Shortest Image
Distance (S'O')
|
2m
|
