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Posts Tagged ‘caffenol’

Video: Caffenol film development from a coffee connoisseur’s point of view

25 Jun

There’s no shortage of videos on YouTube showing how to develop film using Caffenol, a broad name used to describe a homemade film development chemical that uses coffee, vitamin C, sodium carbonate and other ingredients to process film. Usually, it’s film photographers or analog aficionados making and sharing these videos, but in his latest video, coffee genius and 2007 World Barista Champion James Hoffmann shares his take on Caffenol development, sharing the experience from a coffee expert’s point of view.

As you might expect from someone so knowledgeable about coffee and its attributes, Hoffmann doesn’t settle for the instant coffee Caffenol. No, he goes all out with fresh-roasted beans and an elaborate recipe that requires him to pull nine double-shots of espresso that’s then filtered multiple times to replicate the instant coffee recipes you often find online.

A screenshot from the video showing an exposure captured on Ilford HP5 120 film with a Mamiya RB67 Pro S medium format camera and developed in Hoffmann’s custom Caffenol recipe.

After going through the recipe and development process, Hoffmann shares behind-the-scenes video of him capturing the photos on Ilford HP5 120 film in a Mamiya RB67 Pro S at a local roastery with the developed and scanned images overlaid on the footage.

Although the scans he shares aren’t high-resolution, they look about how you’d expect from Caffenol development of Ilford HP5 120 film. Overall, the 13-minute video is a wonderful watch with a unique look at the process we don’t often see in the photo world. If you’re a coffee fan yourself, do yourself a favor and subscribe to Hoffmann’s YouTube channel. He’s a wealth of knowledge and his calm-but-insightful videos have an almost meditative flow to them.

Articles: Digital Photography Review (dpreview.com)

 
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Video: How to make caffenol developer and salt fixer using common household items

31 Mar

Photographer Brendan Barry has published a new video instructing viewers on how to make their own caffenol developer and salt-based fixer using common household items and ingredients. The process is very simple with the most expensive item being the photo paper. The new tutorial follows a video Barry published last week showing how to turn an entire bedroom into a massive camera obscura.

The new video is around 15 minutes long and it guides viewers through the entire process, starting from the ingredients and items needed all the way through the development of a photo captured using Barry’s giant room camera. The recipe is the result of experimentation, according to Barry, who points out that these ingredients may be easier to acquire at the moment compared to more traditional products.

The developer requires washing soda, granulated coffee and vitamin C powder — Barry notes that vitamin C with zinc didn’t appear to have a negative impact compared to vitamin C alone. Ordinary inexpensive table salt is used for the fixer. Mixing the two products requires only a mortar and pestle for grinding the vitamin C tablets, a small container and a measuring cup for mixing the developer and a separate container for mixing the salt fixer. A digital scale is used to weigh some of the ingredients.

Once the developer and fixer are mixed and poured in the trays, the exposed photographic paper is put in the developer for ‘about three minutes,’ according to Barry, who explains that it needs to be left in a bit longer than would be typical with a normal developer. The coffee stain on the paper produces a slight sepia tone in the resulting image, he notes, also explaining that the vitamin C is what produces the contrast in the photo. Leaving out the vitamin C will reduce the contrast.

After the developed paper is rinsed in the tray that contains plain water, it is transferred to the tray with fix, which highlights the one big disadvantage to this process. Barry explains that the photo paper must be left in the fix for ‘quite a long time,’ which equates to around 12 to 24 hours, though the lights can be turned back on after an hour.

Barry demonstrates how to quickly create a positive print from the resulting negative, though he notes that more detailed information on this process is provided in the camera obscura tutorial video from last week.

‘This is obviously just a basic, simple introduction to caffenol and making your own developer and fixer,’ Barry explains. ‘I like to make things as accessible as possible and encourage other people to have a go at these things. Sometimes they can seem a bit intimidating and complicated […] but it’s really, really simple.’

Articles: Digital Photography Review (dpreview.com)

 
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