I have the Mamiya RB67 with the Polaroid back, I loaded it up and shot an exposure of the Fuji FP-100C and every exposure is coming out just black. I really need some help.
I know it's not the shutter nor the dark slide because I pull that before the shot and insert it right after. I've watched several videos and they mentioned to leave the camera in "Mirror Up", other than that I'm not really sure because I've done "mirror up/normal". Honestly, it could be operator malfunction but I really don't know what I'm doing with this camera.
Is there any other needed information I forgot to mention?