No ISO 400 film at hand but facing a nice low-light situation? Your frigde is full with ISO 100 films but you want to shoot fast moving things? You want high contrast and hues shifts without crossing? Maybe Push Processing is a way!
Push Processing is an old known darkroom technique. Basically it´s about underexposing and then overdeveloping a film. Just put a ISO 200 film into your camera and set it to ISO 400. Expose the whole film with this setting and upon letting it developed write “Please push one step” on the envelope. I wanted to try this for quite some time and now that I did, I’m stunned by the outcome: high contrast, some hue shifts and large grain.
It’s also possible to push by more than one step, I already tried a ISO 100 Film on ISO 400 setting and it turned out good. Pushing ISO 400 to ISO 1600 should be worth a try. Black and white film can be pushed even more.
Push processing should be tested in combination with X-pro and Redscale. There’s a lot to do! Try it out!