Would you be kind enough to answer a question for me about the 6x17 roll film back from Shen-Hao I have the Art Panorama back and I played with it for the first time this weekend but my film came back with frames overlaping? I was shooting 6x17 and I advanced the film using the #'s on the back which I thought would be 3,6,9,12. I guess I am not understanding frame advancement for the 6x9-6x12-6x17.
Usually these multi-format backs have different frame-number holes for different formats (a back that does 645 and 6x9 or 6x6 and 6x12 might use the same hole for both formats), and each one is labeled with the frame numbers to use. On my DaYi 617 back it's 2-5-8-11 for 6x17.
Also--6x12 is 2, 4, 6, 8, 10, 12 (using the 6x6 number series, as does 6x17), and 6x9 is 2, 4, 6, 8, 10, 12, 14, 16 using the 645 number series, on my DaYi back. If the holes are in the same place on your back, then it should work the same way.
I have no direct experience with that back but I can tell you, that in general with all panoramic cameras/wide format cameras and backs, it is very important to be sure the film is spooled tightly before you close the back. I have had problems with a Fuji G617 and even once-in-a-while with my Noblex F150 when I forget to do this. With most cameras or backs, holding the advance spool tight while turning the rewind just a bit generally works to tighten things up.
The correct film winding count would be 2, 6, 10, and 14.
Claire, David's numbers looks right to me: 617 is three frames of 6x6. So first one shall have number 2 in the middle, 2+3 is 5, 5+3 is 8 and 8+3 is 11.
Marko
I've had this exact same issue when using this back (a friend's) on the Shen Hao. I don't own the back, but I'm going to buy it this fall. I ran 2 rolls of film through the back following the directions, and both had overlapping frames..!
When I use the back next time, I'm going to sacrifice a roll of film and mark the paper back as I'm advancing it...taking note of where I am in the window on each frame. Something isn't right with the back, or I was doing something wrong. I'm beginning to suspect I had the back on incorrectly.
I may sacrifice a roll just so I have proof positive. I lost 7 rolls this weekend and I am a little gun shy.
I don't own a Shen-Hao 6x17 back but I do own and use a lot myV-Pan and Canham 6x17 backs. Both start on the number 2 for 6x17 images. The V-Pan has a viewing hole so you can manually advance the film to the numbers 2, 6, 10, and 14 on the back of the film. My film doesn't overlap.
If the Shen-Hao back is configured differently than the V-Pan, you could start at 3 but you will have to advance beyond 6 in order not to overlap. If you have a bad roll of 120 film still with the paper backing, run it through your back. You will clearly see where to start your first image and how many frames you must advance.
The DAYI back has three holes at two vertical positions across the film which means there are two indexing schemes on the film. This could lead to some confusion if people are talking about backs with different window positions. The DAYI uses one of its two top windows for 6x17 with index numbers 2,5,8,11.
Posting Permissions
Reply With Quote
Bookmarks