70mm-backs

[europanorama]

i have graflock 67/70mm 4x5 international.
which other 70mm-backs are around or made? except those in willem-jan markerinks-listings.
mainly 6x9 and 6x12. are there others?
e.g. hulcher made a high-speed 6x12.
mamiya rb 67/70mm-back has manual vaccum-system. it can be adapted also to rz and mamyia press. rollei 600x-70mm-back is or is based upon that mamyia-design.
film-flatness. we had huge problems with art panorama 612(mamiya press-mount). due to stupid design it was almost impossible to make the film tight. i had sold hassi elx with a12 due to filmflatness-problem during aero-shooting. i didnt know thatr darkslide-slit had to be covered with tape... 70mm back would have helped.
i have also an eye on pentax 67-vaccum-back offered by hutech(or similar).
why all the fuss about 70mm? isnt it out of date. no, friends, the opposite is true. agfa-gevaert-belgium has unique avicolor called colornegative films. n and x-type. x-100 and x-400 have no mask, idela for scanning and b+w. ir-filter is integrated. wonderful greens. let alone neutral whites and blacks. problem is they are only 70mm and above 126 and 240mm(perforated and unperforated) except 800 which comes in 35mm perforated. yes- agfa is now on par if not above on kodak and fuji. kodak has announced new 160 and 400-emulsions. hopefully also in 35mm UP and 70mm. what has fuji? still no export?

[Peter K]

I've used Hasselblad 70mm backs, the small ones for 70 exposures. There was a big one aviable for 100 feet rolls, but I've never used one.

Also I've used Linhof Cine-Rollex backs for 50 exposures. Because my favorite films aren't aviable now, the backs are collecting some dust. But your thoughts about Gevaert films make me hopeful. "Long play" backs for 100 feet rolls where also aviable from Linhof.

My impression was that film-flatness is no issue. Compared with rollfilm 120 70mm film is better because of the perforation.

I've always used double perforated film, but the Hasselblad back uses only one perforation for transportation and frame counting.

[Jim Galli]

Perhaps off topic but I've been having fun with a funky little No. 2A Folding Pocket Brownie (http://www.camerapedia.org/wiki/Kodak_No._2A_Folding_Pocket_Brownie). I discovered that 70mm film is the same width as the old 116 roll film that these brownies used. That makes it quite useable and laughably cheap to make pictures of some distinction with.


http://tonopahpictures.0catch.com/CastandCrewGoldfieldHotelS.jpg
Cast and Crew Goldfield Hotel

I love that the sprocket holes become part of the photo. Format is 2 1/2 X 4 1/4, also intersting 1:1.7 a mini pano.

[Cambo]

agfa-gevaert-belgium has unique avicolor called colornegative films. n and x-type. x-100 and x-400 have no mask, idela for scanning and b+w. ir-filter is integrated. wonderful greens. let alone neutral whites and blacks. problem is they are only 70mm and above 126 and 240mm(perforated and unperforated) except 800 which comes in 35mm perforated. yes- agfa is now on par if not above on kodak and fuji. kodak has announced new 160 and 400-emulsions. hopefully also in 35mm UP and 70mm. what has fuji? still no export?

How do you know Agfa is again making film? I thought they had died.

[Peter K]

Cine- and aerial materials was always made in Belgium at Gevaert.

http://www.agfa.com/en/sp/solutions/aerialphotography/index.jsp

[Dave Moeller]

I discovered that 70mm film is the same width as the old 116 roll film that these brownies used.

Thank you Jim...very much. I've got a 2A that I've wanted to convert, but I couldn't figure out what to do with it. You just saved me a lot of frustration.

[Hening Bettermann]

Hi!
Does anybody sell these films to individual photographers, and process them?

[Nick_3536]

I'd be curious if a source for Agfa film in reasonable lengths exists? Some thing less then 5000 feet -)

[Terence McDonagh]

Before J&C shut down they were selling a 70mm perf II film that they called "infrared", but which is really more an enhanced red sensitivity aerial film made by Agfa-Gaevert. They were 125' lengths if I remember correctly. I have a few in the freezer.

[Nick_3536]

And I missed it-(