Quote Originally Posted by madgardener View Post
Is Ilford SFX an infrared film? If I were to use SFX with infrared filters, will it give me infrared effects?
Infrared? Yes! I shoot Ilford SFX at EI 6 behind IR680 and IR720 filters and it delivers a conspicuous infrared effect. The appearance doesn't SCREAM over-the-top infrared like Kodak HIE always did and Efke IR820 did sometimes but it's very distinctly different to panchromatic film behind a deep red filter.

My only grumble about Ilford SFX is its graininess and limited sharpness. I suspect (speculation!) that SFX is basically Ilford HP5+ with IR sensitisation dye added. Sheet film formats, 4x5 and 8x10, would be wonderful.