This back roll is designed based on the Graflock system for the Panoral 57 camera. The back roll is designed for 6x17/6x12 shooting with a Panoral 57 camera. You can use it exactly like a 6x12/6x9/6x7 back roll on a 4x5-inch camera.
The method of using is very simple. You need to focus on the 5x7 ground glass and set tilt or shift, if needed. Then separate the ground glass part by pressing two spring arms from the back part. Now you can mount the back roll to the back part and shoot. You will not need extra ground glass. You must use the 5x7in ground glass of the Panoral 57 camera.
The Panoral 57 ground glass has 6x17 and 6x12 format line. You can get the right composition with them.
You can shoot 6x17 or 6x12cm with this back roll. The back roll has a 6x12 mask that is mounted by 6 screws to the body of the back roll. So you can shoot 4 frame 6x17 or 6 frame 6x12.
ALVANDI 6x17/6x12 Graflok roll film back Technical Specification
Number of Image: 6x17: 4 , 6x12: 6 image on 120mm film
Counting the number of image: According to the recorded numbers behind 120 films.
Material: Aluminum Alloy 6061 full CNCed
Coating: Semi–gloss black Anodizing
External dimensions: W:218, H:150, D:40 mm
ALVANDI 6x17/6x12 Graflok roll film back price