The effect on Ilford SFX 200 with #25 filter is rather weak, so I use a #29 filter (actually a B&W 091). Works fine in summer with plenty of infrared. (Agfa APX 200S is pretty close)(posted 8979 days ago)Konica 750 is a slow fine grain film, works well with #25. Available as 135-24 and 120. Sometimes hard to find.
Kodak was mentioned above.
Wolfram