LIST VERSIONS

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Aperture

T1.8 to T22 for 77 & 107mm
T1.9 to T22 for all other focal lengths

Iris System

non-linear, 14 blade

Image Distortion

less than -4% / +0.5%

Transmission waveband

420nm to 680nm

Color and tonality

matched across the range

Magnification Shift

less than 4% (from ∞ to close focus)

Focus and Iris Backlash

negligible

Flange system

PL Mount

Focus Scale and Drive
17 to 137mm

windowed
left/right in feet (meters on request)
270-degree rotation
gearing: 142 teeth, 0.8mm mod, 6mm width, 115.2mm dia

Aperture Scale and Drive

non-windowed left/right
90-degree rotation
gearing: 134 teeth, 0.8mm mod, 3mm width, 108.8mm dia

Operating Temperature Range

-20 to +45 C