Ilford 200 ISO Black and white infrared film.

A r72 filter is used with this film. This filter is dark enough that you have to compose and focus your camera and then put the filter on. The working ISO with the filter in place is ISO 6 requiring slow shutter speeds. This makes it difficult to photograph on windy days, Chlorophyll reflects infrared causing trees and grass to photograph brighter. Water, which is cooler  and reflects little infrared, usually shows up black in infrared. Skies are always darker in infrared. Infrared photography can cut through haze.

Film b and white images tend to be grainy. This roll of fill was processed in D76 for 17 minutes at 70 degrees.

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