Mirror problem with my RB67

[Noah Cartwright]

I just recently got into medium format so I picked up an RB67 from eBay. I shot a roll of film through it thinking everything was okay. Later that night I wanted to go take some long exposures and realized the Time mode doesn’t work. I will shoot and the shutter immediately closes. I took the camera home and found out that when I fire the shutter, the mirror doesn’t go up all the way. I have to gently push it with my finger and then it goes up and then the shutter will fire. When I take the lens off the body it works perfect fine. Arm the mirror, fire, everything works great. But as soon as the lens is on the mirror only goes up halfway, or sometimes almost to the top but not enough to make the shutter fire. Any idea what this could be? The lens in question is a Sektor 90mm 3.8

 

[Donald Qualls]

Sounds like the shutter (in the lens) has a stiff release. Find a tutorial on how to release and cock the lens off the body and see if it's hanging up when it releases.

 

[shutterfinger]

How did the roll of film turn out?
https://learncamerarepair.com/product.php?product=639&category=2&secondary=22

 

[narsuitus]

Can you try another lens on the body?

 

[Noah Cartwright]

How did the roll of film turn out?
https://learncamerarepair.com/product.php?product=639&category=2&secondary=22

I sent a roll to the lab today to see how they turned out

 

[Noah Cartwright]

Can you try another lens on the body?

I only have one lens

 

[Noah Cartwright]

Sounds like the shutter (in the lens) has a stiff release. Find a tutorial on how to release and cock the lens off the body and see if it's hanging up when it releases.

I think this might have fixed it I’ll update soon