I totally forgot about Ilford SFX 200 special effects black and white film…. so much so that it was apparently discontinued and resurrected since I last used it. Here’s some more info from Ilford:
ILFORD SFX 200 RETURNS. SFX 200 is a medium speed black and white camera film for creative photography. It has extended red sensitivity and is especially suited for use with a filter to create special effects. By using a deep red filter skies can be rendered almost black and most green vegetation almost white. Its unusual tonal rendition ensures interesting results for a range of subjects, including portraits, landscapes, townscapes and architecture.


















