The diopter stage can be used at the back of a 4 x 5.65 clip-on a matte box, or independently with a rear-mounted clamp adapter. 138mm or 4.5 Diopters up to +3 can be fitted, and the position of split diopters can be adjusted with an integrated friction wheel. As with the diopter frame, a safety device and 1⁄4” mounting threads are included.
