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4x5 Graflok Divider Back by Graflex-using Polaroid 545i

Dublin 1977

H
Dublin 1977

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  • Feb 16, 2026
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europanorama

Member
Allowing Ads
Joined
Aug 10, 2004
Messages
381
Location
Basel-CH
Format
Large Format Pan
I have that 4x5 Graflok Divider Back by Graflex. First idea was getting one with 2x3-graflok to mount Mamiya RB67/70mm vacuum-back. I was wrong since its the larger Graflok-mount also on filmholder-side.
So i tried out Graflex RH50/67-70mm back(for Perforated and Unperforated 70mm film.
Since frame is not full 92 x120(i would have to cut it out) and my back(all of them) can only be mounted horizontally i am only getting a portion of what expected. not 68 mm heigth images(largest side of that 57 x68mm back. nor can i get full 120mm lenght since its a divider back with 56 x92mm frame.
the only advantage would be using it with NEW 55(1 image: 15 usd) since it will be divided onto 2 pieces of 56 x 92mm vertical. but from frame to film is a 2mm gap. i wonder how first exposed part can be protected, only second part is protected by darkslide.
So i took 545 is-polaroid holder to check that. dont have yet 4x5-camera-POLAROID MP3 coming.
Big surprise: left image was no problem but when sliding this back to the left, cameraside-grip would interfer slider since its 2mm too thick leading to lifting the back this match. Polaroid didnt think about that.
Would lead to interesting Scheimplug-effect!
So the question is: Which if the other 545-backs which can carry NEW 55 is slimmer? from filmbase to slide i have approx. 10mm 545-grip is protruding this by 2mm. Images will follow
 
OP
OP

europanorama

Member
Allowing Ads
Joined
Aug 10, 2004
Messages
381
Location
Basel-CH
Format
Large Format Pan
From these links i learned how the camera-backs and filmholders are named:
Graflok-Graphic-Graflex
http://www.pacificrimcamera.com/pp/gbacks2.htm
https://lommen9.home.xs4all.nl/holders/
https://www.graflex.org/speed-graphic/accessories.html#RollFilmBacks
This 4x5 Graflok Dividing back by Graflex has the two ridges. like Singer Graflex RH-50(67/70mm) for 4x5 has. Is called Graphic!
What will happen when trying to use on Graflok-back-cameras lacking the grove to fit one of the two ridges?
filmplane will be augmented on one side right?
second ridge will touch the end of the camera-frame. in my case the frame of the dividing back.
 
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