Auteur: Marc Grandjean
Date: 14-08-2003 16:30
____________________Xenar 4.5/150mm
________________OPTO-MECHANICAL DATA
(with lens focused at infinity)
Lens elements, Groups
4, 3
Shutter Size
l+1
Flange Focal Distance
144mm
Filter Mounting Thread
M 40.5 X 0.5
Weight (with shutter)
250g
Overall Length
38.5mm
__________________________IMAGE DATA
(with lens focused at infinity)
Recommended Format (negative) Size
90 X 120 mm
Image Circle Diameter at f/16
180mm
Angle of View at f/16
62 degrees
Lens Displacement at f/16 (vertical/horizontal)
_
90 X 120 mm ; 83.5 X 114 mm
27.9/22.7mm
4 X 5" ; 94.4 X 120.3 mm
19.8/16.5mm
________________________OPTICAL DATA
(with lens focused at infinity)
Effective Focal Length (F')
150mm
Back Focal Length (S'F')
131.2mm
Principal Point Separation (HH')
1.5mm
____________________________________________________________________
Voila voila.
sinon voir:
http://www.schneideroptics.com/info/vintage_lens_data/large_format_lenses
MG
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