Cross processing slide film with Agfa precisa CT

It happens that I developed my first cross processed film inadvertently. I took some pictures on a slide film but didn't marked the film properly afterwards. So I developed the film as always with a bunch of C-41 films. I was surprised to see the unexpected results and complete color shift of the negative. However I scanned the negatives and analyzed what was the reason for this. In the end I realized that I have unknowingly done the cross processing ;-)

 

In this article I want to introduce you to the world of cross processing... and at last you will get to see my first picture.

 

Street view in Lübeck.
Lübeck | Cross processed slide film

There exist two different types of color film:


Color negative film is the most common color film. This type of film is proposed to be used for printing. Usually with the means of an enlarger in the darkroom. This film will be developed with the C-41 chemistry in a standardized process. Typically the negatives have an orange look resultant of a color mask. 

 


Color positive film is also known as color reversal, chrome, slide film or transparency film. It's developed after the E-6 process. Here you get a correct, positive image which can be viewed with the aid of a magnifying loupe or a lightbox.

 


 

Camera Olympus XA

 

Lens F.Zuiko F/2.8 35mm 

 

Film AgfaPhoto CT Precisa 100

 

Development C-41 Tetenal Kit


What is cross processing?

Cross processing (also referred as X-Pro) is when you intentionally develop your film with the wrong chemistry. For instance a color negative film is standardized processed with the C-41 chemistry. But if you take the E-6 chemicals normally used for color positive film then you do a cross processing. The same can be done vice versa.

  • C-41 to E-6
  • E-6 to C-41
  • C-41 film can also be developed with black and white film developer e.g. D-76. Here you get a monochrome negative picture.

what is so special and How is it done?

The most common characteristics of cross processing are changed contrasts and extreme color shifts. Each film has a different look. The color shifts can have a wide range from high saturated red, blue, green and so on. For instance, the image might have a strong blue tone in the shadows but a heavy yellow in the highlights. 

 

In general E-6 film processed in C-41 shows a lower contrast and has muted colors.

 

How do you do cross processing?

 

Some film labs offer to cross process your film. But you have to state that explicitly. Otherwise it will mostly happen that the film is developed as written on the film canister.

 

But the easiest way is to develop your film by yourself. There you have the most control about the process. I used to do this with the Tetenal C-41 Kit and a Jobo rotary processor. So far I develop color film by the C-41 process so that a roll of slide film can easily cross processed. As I could say I couldn't find any negative side effects to the other films in the tank.

 

Review of the results with the Agfa precisa Ct 100

In the following I will show you my recently cross processed color negative film. I used an expired AgfaPhoto CT precisa and took an Olympus XA camera which is my favorite travel camera. It's a small, lightweight 35mm rangefinder camera with a fast f/2.8 35mm lens which gives really sharp images.

 

How you can see in the pictures that these have a very dominant green look and a high contrast. I like the first picture of Lübeck very much. The sky looks extreme dark and in comparison to the houses has a nice contrast. Also the greenish color completes in a surreal look. 

 

Finally I would say that I like the unpredictability outcome of cross processing very much. You never really know what you get and but that’s the fun of analog photography.

 

Crossing bridge for passengers.
Crossing bridge.
Open door to the garden.
Open doors.
Colorful autumn leaves.
Autumn leaves | Cross processed slide film
X-Pro | Pentax ME Super | Fuji Sensia 200
Just an Illusion.
Cross processed slide film
Cross processed slide film
Still live with potts at the wall.
Still life with potts and a wall.
Forrest in autumn.
Forrest in autumn.

  

The picture on the left side is from the mentioned first cross processed slide film. Contrary to the AgfaPhoto you can see for the Fuji Sensia 200 film a color shift to red and also a strong contrast.

 

Camera Pentax ME Super

 

Film Fuji Sensia 200

 

Development cross processed with the C-41 Tetenal Kit

 


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