I have an 45 degree prisma for my SL66. The rubber EyeCup is worn out. Replace by an Rollei EyeCup ‘ll be very difficult an very expensive. But I think there is another that ‘ll fit. Is there an Chinese or Nikon, that ‘ll fit ?
I see lot’s of eyecups < €15,- on ebay etc. but no sizes.
The Rollei EyeCup is circa 15 mm Heigh, 45 diameter maximum and mount size circa 30 mm threat,
Nikon DK-19 looks similar but does it fit ?
https://www.youtube.com/watch?v=x48H9Bg2CpU