IRIS DIAPHRAGM
A metal screen 75mm dia, with an adjustable iris diaphragm mounted in the centre, giving a maximum aperture of 6mm.
A metal screen 75mm dia, with an adjustable iris diaphragm mounted in the centre, giving a maximum aperture of 6mm. The disc is mounted on a 6mm brass rod and the optical centre height is 80mm apprох.
Full Specifications:
