meu amigo Joao Go to https://cameraventures.com/gomz-junost-yunost-en and see how easy it is. Nurn the milled borrom knob and move laterally the complete bacck comes out! Saudações do Brasil LP
I've never heard of Yunost cameras. I've just looked on the soviet camera site and it says that the shutter speed and aperture are linked. Can they be altered seperately?