6x12 roll film back structure
Almost more features 6x17 roll film back, is also true for the 612 roll film back. 6x12 roll film back is not designed specifically. Its design is completely standard and compatible with other famous brands. So the product can be used in other 4x5 cameras.
6x12 roll film back can record, 6 images, 6x12mm on the 120 roll film. Replacement frame is by knob motion film, and counting the recorded image, will be, by numbers behind the film. 2-4-6-8-10-12 numbers, back the film, shows the No. of recorded images. Film counting window, in a certain way, preventing the penetration of light into the roll film back. In addition to the above, a metal gate, preventing the penetration of light to back of the film, and it can be opened only when needed.
612 roll film back interior design
When mounting roll film back to panoral 45 camera, grooved edge on the right of roll film back, will prevent the penetration of light, through the camera – roll film back connection. Also remove the dark slide of the roll film back easily.
Like 6x17 roll film back, grooved edges on both the front and rear of roll film back, will prevent, of light passing to inside. Two sliding lock will connect the two parts into each other.
I made a different kind of product, the addition of an 6x12, to be shooting other standard formats, such as 6x4.5, 6x6, 6x9. So it has two holes behind the roll film back. One for the 6x4.5 & 6x9 and another for 6x6 and 6x12. For each of the 6x4.5, 6x6, 6x9 formats, i made special masks considering the preferred format, it can be attached to front of the roll film back. For 6x4.5, 16 frame, 6x6, 12 frame and 6x9 only 8 frame can be recorded on 120 roll film.
Number of Image: 6x12: 6 , 6x9: 8 , 6x6: 12 , 6x4.5: 16 image on 120mm film
Counting the number of image: According to the recorded numbers behind 120 films.
Material: Aluminum Alloy 7075
Internal Paint: Anti–reflective black
External color: Semi–gloss black coating
External dimensions: W:120,H:165,D:40 mm