Slide film in C41

Joe O'Brien

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If I process some 4x5 velvia in walgreen's C41 will I have something that would be a positive image? Like could I view this if I taped it to a window pane and had the sunlight coming in from outside? I'm betting this is a pretty novice question, I'm terribly new to cross processing and I apologies!

Thanks
Joe
 

lxdude

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Walgreen's will process 4x5?
 

srs5694

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As stated, you'll get a negative, but the color balance will likely be off when it's printed like normal C-41 film, and the color will be impossible to correct by most means. Try Googling "cross-processing;" I'm sure that'll turn up some samples. It can be fun to play with cross-processing, but you certainly shouldn't do it if you want normal color.
 

Photo Engineer

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Fuji films reportedly cross process more poorly than Kodak E6 films. I find that this is an overstatement. Actually, Kodak EPP does well, but some Kodak E6 films are not as good. Fuji films suffer due to the fluorescent light sensitization (I think).

Best of luck.

PE
 

perkeleellinen

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My limited experience with crossing slide films is that the older Ektachromes like EPN and EPP and the tungsten films, EPJ, EPT had the most pleasing look to my eye.
 

holmburgers

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I seriously doubt that Walgreens will do 4x5". I'm sure the hourly worker didn't understand fully what you were asking. HOWEVER, if they do, please report back.
 

domaz

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I would like to see the look on the Walgreens cashier/photo op's face when you come in with a box of 4x5 sheets. Ha.
 

lxdude

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2F/2F

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I doubt that the photo lab worker at Walgreen's knew that you were talking about 4x5 film...and if he/she did know, and they will take the film for processing after all, I am also sure that they will send the film to an outside lab, as Walgreen's stores do not have the equipment to process sheet film.

As for the question, the way a piece of film turns out depends on the process it is run through, so you will get a negative back if you run film through a process designed to produce a negative, even if the film was designed to be used for making positives. All film (that I know of) is inherently negative film. Even E-6 films - designed for making positives - are negative films that are reversed as part of the standard E-6 process.
 

sadiepaige01

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Cross processing could be any film processed in a different chemistry than the one it is designed for, but usually refers to having slide E6 film processed in negative C41 chemistry. The colors and contrast will be unusual, which is why you'd do it for the artistic effect. Some labs refuse to do it, but in reality it would take many rolls processed to jack the chemistry. In my lab, I occasionally have a request for X-process which we will do
if it's not many rolls. Many 1-hour minilabs will refuse though.
 
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