Krasnogorsk-3 Super 16 mm viewfinder mask modification (1.33:1 to 1.66:1)

Okay, let's modify the viewfinder for a complete super 16 mm conversion (after the gate and the recentering ring). For this project I used a thin copper plate and a CNC laser cutter to make the new mask (thanks to the jeweler).

MASK MEASURES

Diameter: 18.5 mm
16 mm (original mask): 9.6 mm x 7.2 mm (1.33:1)
Super 16 mm (new mask): 12 mm x 7.2 mm (1.66:1)

#16mm #krasnogorsk #cinematography

[seansimpson]

Can you make a video about repairing the light meter?

[harakiri]

hey, i tried following the steps you did, but the viewfinder shaft is impossible to pull out for me (0:39). there seems to be something blocking it. it only budges one or two millimeters. the needle is down. any ideas? thanks in advance! 🙂

[kevinpowell]

Thank you for showing where the K-3 mask lives and how to access and modify it! In the middle of performing Ultra 16 mods on two cameras now to 11.66 mm × 6.15 mm = 1.85 aspect ratio. Is the mask a 1:1 with the actual film gate size?

[thousandoaksmall]

Cool video, I'd love to see more videos about K3 mods. There's almost no good content on modding these cameras. But the position of the ground glass after a super 16 gate upgrade is then off to one edge. So, while the new mask's shape is 1.66:1, the image in the viewfinder is still not the accurate frame, correct? That is, wouldn't you then need to modify the ground glass' position and shape as well?