Quote Originally Posted by Thomassauerwein
When rolling the film to the next frame the first time I used it I had light leak. Now I press the back against the camera while rolling the film or put the dark slide in and problem is solved. As much as I like the Shen Hao it is kind of rinky dink and needs to be handled with kid gloves. I'm used to the horseman camera that is very tight. So have had to adjust my handling to be more sensitive.
I got my Shen Hao 6x12 back from the View Camera Store. Came with an external 6x9 mask. I have never had any problems with light leaks. I have used it on my Wista and Speed Graphics, it is a really snug fit on both cameras.

Mike