Red film base? And idea what this is?

<p>Anybody want to have a guess at what this is? All I can think of is that maybe it's dummy film, to practice loading and unloading. And other ideas?</p><div></div>

<p>Official Government red tape?</p>

<p>I've seen counterfeit rolls of film. Usually these are name brand boxes and cassettes with a small piece of leader sticking out. I've never seen counterfeit off-brand film. </p>

<p>Duplicating microfilm. Kodak 2468 is similarly red.</p>

<p>May be something like this “KODAK PROFESSIONAL PORTRA 100T Film / Tungsten"</p>

<p>I would tend to think that it is some type of special-purpose black and white film. I would do an exposure test from ISO 1 to 100, and develop in a standard developer, just to see what it is. </p>

<p>It is transparent, hence no emulsion. Unless just the leader is transparent, which seems unlikely. I don't think Kalt ever sold film under their brand, so I'd say it's a dummy roll, maybe for promotions or something.</p>

<p>KALT makes reloadable 35mm Cartridges. I have some microfilm it is red but not the base the emulsion. I am pretty sure that back in the 70s we had some of that stuff to teach people how to load cameras and reels. I say it is practice film.</p>

<p>Thanks for the replies guys. What I'm going to do is pull the film out a little further and see if there's any emulsion in there. If it is, I'll assume it's microfilm and we had to give up a few frames to find out. If I keep pulling and never see emulsion, than I can only assume it's a dummy roll.</p>

<p>Or at least it will be, by that point :)</p>

<p>This roll (and several others) were all from a customer who found a box of film in a late family member's house. I assume most of them are blank (leaders still out, no crimp on the leader from being loaded), but I won't know until I develop at least some of them.</p>

<p>email Kodak tech support? I think he's still alive ....</p>

<p>The 2468 is quite transparent, not very opaque. It's not a conventional silver emulsion, EI something under 1, reversal when processed normally in D-76.</p>

<p>I bought some Kodak Duplicating film from Freestyle many years ago that had a red base. </p>

<p>Kodak made a "direct positive" motion picture film available c 1980. It had exactly the same appearing red, transparent film.</p>

<p>When I asked a Kodak TSR (technical service rep) how this emulsion worked (it would make either a negative or a positive image depending on what was printed on it). His answer was "it's magic". Kodak speak, for a proprietary process.</p>

<p>Hah hah! Thanks Steve :)</p>

<p>I pulled out the leader another few inches, and saw no change in transparency. So I called the customer and told her what you guys told me: that it was either duplicating film, or nothing. Being that all the other bulkloaded rolls were blank, we just gave up on trying to develop this one.</p>

<p>Thanks for the help guys!</p>