J 3
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- Feb 1, 2016
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Everyone's answers here have kind of hit upon this but as a principle if you are looking for contrast beyond that of a normal high contrast film, look for respooled microfilm or lith film (often Ortho films). Anything this a single digit ISO or nearly so is likely to be very high contrast without special low contrast developers. Another option worth mentioning is Infrared film under a strong IR filter. Rollei 400 IR under a suitable filter will give near black skies, white clouds, and white foliage.