T max film base

[SMBooth]

Can anybody tell me if the film base on Tmax 400 120 roll film is the same as density Tmax 400 8x10 sheet film.
I want to do some tests for carbon printing but don't want to waste a full 8x10 sheet to get a 50mm strip of film.
Thanks

 

[brianmquinn]

"Kodak found in a 2007 survey that there was an ongoing commitment to black-and-white film. They decided to improve both the grain and sharpness of T-Max 400, and it took them 18 months to do it. Large-format photographers who used a UV light source to print platinum/palladium were bothered by the UV dye layer on the back of the old T-Max 100 sheet film (it protected the film against static electricity). The new T-Max 400-2 is free of UV dye in both 120 and sheet film, though 35mm T-Max 400-2 does have the UV dye layer." Photo Technique 2009

Photo Technique was one of my favorite mags. Sad to say it stopped publishing last year.

 

[SMBooth]

yes was aware of the UV issue in TMax 100, Ive got Tmax 400-2 so all good. By the sound of that 120 base is same as sheet base. Thanks

 

[Tom1956]

Probably a rather sizeable difference in thickness. Never saw a 120 film that wasn't thin and flimsy and a sheet film that wasn't thick. Litho-offset film excluded.

 

[Vaughn]

My guess is that you will find that the thicker film base of sheet film will block a little more UV than the thinner 120 film base.

I have used Scotch tape to hold negs onto the printing frame's glass (for carbon printing) and even that blocks enough UV to be seen in the print.

 

[SMBooth]

Thanks, I realized that I'm going to have to waste a sheet or two anyway, so I will have a strip to use.

 

[Simon R Galley]

Sheet film and roll film substrate are usually very different.

Simon. ILFORD Photo / HARMAN technology Limited