OBJECTIVE LENSES
Each international customer is responsible for paying local taxes and fees! We ship from Tucson, Arizona, USA so only US customers (excluding Arizona residents) will receive their items tax free. Contact your local customs authorities before ordering.
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EVERY SINGLE ISTAR LENS IS INDEPENDENTLY TESTED TO ASSURE CONSISTENTLY HIGH QUALITY. WE USE TWO TEST METHODS, RONCHI, and INTERFEROMETER TEST (TESTED TWICE BY 90-DEGREE ROTATION TO OBTAIN THE MOST ACCURATE DATA).
WE HAVE INCORPORATED SPECIAL HEAVY (SHORT) FLINT GLASS IN ALL R30, R35 AND R50 DOUBLET DESIGNS IN ORDER TO REDUCE CHROMATIC ABERRATION AND INCREASE RESOLUTION.
250 mm (9.8") F/11 R30
$7,650.00
Item Description
Lens Diameter
Clear Aperture
No of Elements
Focal Length
F-Ratio
Type of Coating
Fully Multicoated
Weight (incl. cell)
Cell O.D.
HandFigured
Minimum Surface Quality
Achromatic R30 (Anastigmatic) Hand Figured Doublet in Push-Pull style cell
254 mm
250 mm
2
2712 mm
F/11
SiO2 Broadband Multilayer Film (Yellow)
YES
13.86 Kg
292 mm
YES
PV/4
(LNAN.250.110)
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