Gehmann Colour & Polar 563

30 year guarantee
Extra short construction
New patented aperture control system
Perfect circle guaranteed
Adjustable from 0.5mm > 3.0mm
Minimum light reflection internally
Six colour filters; yellow, green, brown, light grey, dark grey and orange
Infinite control of light with these filters
Minimum light reflection internally
Single polariser, absorbs 10-65% of polarised light
Can be used as iris only (no filters)