Illumina lenses have an innovative bearing mechanism with bearings placed at all the lens elements, that allows to track front focusing elements in and out up to 5mm. This is how Illumina achieves large clear aperture with a compact size.
SPECS:
Diameter: 80mm
Mount: PL
SET:
8mm: T1.3 / 0'25m / 0,7kg
9.5mm: T1.3 / 0'25m / 0,6kg
12mm: T1.3 / 0'25m / 0,6kg
16mm: T1.3 / 0'25m / 0,6kg
25mm: T1.3 / 0'25m / 0,6kg
50mm: T1.3 / 0'25m / 0,6kg