I use this film with B+W 092 red filter for maximum effect. Ilford sells an opaque filter just for this film. Using SFX 200 with a #25 filter results in deciduous vegitation turning white, but conifers remaining dark. A B+W 091 (Wrattan 29) filter will turn the conifers grey. A B+W 092 (as dark red as you are going to get without going to opaque) will turn conifers white.(posted 9034 days ago)I rate SFX at 25, and I bracket +-1 and +-2. I also photograph a scene with both 091 and 092 filters. Both Konica and Ilford respond fine to commercial film development. I develop SFX 200 with Xtol. Can't remember the times right off hand.