Hi all, I just developed my first roll of 35mm maco/Efka IR 820. I'm reasonably familair with Kodak HIE, so wanted a replacement, my last roll of HIE still being in the freezer for a special day. I used a Cokin IR filter (89B equivalent) and exposed each scene as no filter at ISO 100, then each successive one as ISO 12, ISO 6 , ISO 3 and then ISO 1.5, all metered without the filter before putting the filter in place. The suggsted rating is ISO 6-3 for an 89B filter. The scenes were bright sunny days of objects in full sun. I developed in XTOL 1:2 at 16 mins at 20 C (again as recommended). The normally exposed shots without the filter are ok, but rather thin, I would say about a stop under, but the IR shots are barely there. There are a few very thin images for the ISO 1.5 metered shots. What are your experiences of this film? Are these ratings realistic? Oh I should add that developer and fixer were fresh, just made up today.