PDA

View Full Version : Chamonix 4x5" roll film back



eolo14
17-Nov-2010, 12:51
Hi to all, I need to know what kind of roll film back I can use on my Chamonix.
Can I mount the Shen Hao roll film back ?
What is the difference between Graflok and Graflex back ?

Thank you in advance

Gianluca

vinny
17-Nov-2010, 14:24
Any but the original 45n-1 i had was very sloppy in holding it firmly. I had to add shims to my shenhao back in order to keep it firmly against the camera back. It wouldnt hold a 545i back in place without getting light leaks more often than not. I'm now using the 45n-2 which has much tighter tolerances on the film back opening and graflock tabs.

GPS
17-Nov-2010, 14:56
Why not a Calumet C2n?

roteague
17-Nov-2010, 15:36
I use a Horseman 6x12 on mine. Not sure about the Shen Hao.

Michael Gordon
18-Nov-2010, 09:40
ANY Graflock-type roll film back can be used with the Chamonix.

Here are the differences (http://www.xs4all.nl/~lommen9/holders/index.html) between Graflok, Graphic, and Graflex backs.

gevalia
18-Nov-2010, 12:51
ANY Graflock-type roll film back can be used with the Chamonix.

Here are the differences (http://www.xs4all.nl/~lommen9/holders/index.html) between Graflok, Graphic, and Graflex backs.

Yep, never had a problem in either the 45-1 or 45-2.

eolo14
18-Nov-2010, 13:54
Yep, never had a problem in either the 45-1 or 45-2.

I verified !
It's possible mount the Shen Hao roll film holder on my Chamonix (I have the 45-1).

Thank you to all

Gianluca

Kodachrome25
16-Sep-2013, 17:52
I have yet to soup the two test rolls I did in my new to me Horseman 6x12 back but I already have concerns regarding how it sits in the camera's back. It seems as though the back will not sit entirely flush with the camera back due to part of the wood blocking the second and taller baffle on the Horseman back. I am suspecting light leaks to be on my film because of this even though I did indeed bring the keepers to full extended position. I am also concerned about focus inaccuracies due to one end being higher than the other which on average seems to be about .5mm. The Shen-Hao / Da-Yi Backs only have one baffle which seems to do the trick and my 4x5 holder's second baffle is about half as tall as the Horseman so it clears with no issue.

I will add some photos and then go run this film. Any comments or experience would be appreciated as I shoot 6x12 on this camera about 1/3rd to 1/2 the time.

101903101904101905101906

Kodachrome25
16-Sep-2013, 19:17
OK, film came out fine, no trace of a light leak as far as I can see.

I am still puzzled by this though, precision can be a make or break card in this game....

vinny
16-Sep-2013, 19:20
if you decide to keep the horseman back, maybe just have the second baffle machined off and repainted.

Kodachrome25
16-Sep-2013, 19:39
if you decide to keep the horseman back, maybe just have the second baffle machined off and repainted.

Since I could be looking at more than 2 backs, I would be more inclined to mill down the wood, that part is replaceable on the 45N-2. The value lost by milling down an otherwise fine back would add up to a lot more even with the minimum of two I have planned.

I like the back a lot, it is very nice in operation and seems less fidgety. The incomplete fit has me wondering what other Chamonix users have experienced with it though...

RHITMrB
16-Sep-2013, 20:15
No experience with Horseman backs, but I have three Graflex Graflok film holders, and they all fit my 45N-2 with varying degrees of precision.

Kodachrome25
17-Sep-2013, 09:07
So I filed, sanded and oiled the reduced area on the camera's back and now it works fine, Hugo is aware of it and has passed this on to the factory.

Kirk Gittings
17-Sep-2013, 09:53
Why not a Calumet C2n?

I've have a couple for sale here. http://www.largeformatphotography.info/forum/showthread.php?89329-Cambo-6x9-roll-film-holder