Kodak HIE

Hi. I'm keen to try Kodak high speed infrared film and was wondering if anyone had any rough idea of what speed to rate the film at? I'm planning on using a 25 red filter. The instructions say to rate it at 50iso yet I've heard that this will cause massive over exposure and to use something more like 800iso. Does anyone have any advice on this or is it simply a matter of trial and error to see what works best?

Many thanks for any thoughts.

I would suggest rating it at 400 and bracket your first roll +/- 1 stop with the 25 Red
that is using you cameras meter set to 400 and meter through the filter. If you are using an external meter you will need to adjust accordingly.The actual rateing will vary depending on the developer you are using and how your cameras meter reacts in the near infrared spectrum. I have used this with and Canon EOS10 and find that 400 works well with the 25 red but I need 800 for the RG695 which is nearly opaque. Hope this helps

Hi, I have shot a couple of dozen rolls of infrared with my tamon 17mm with a built in #25. I have found that 100 or 200 works okay execept in really bright light. It will then blow outside the frame some. As for proscessing most labs are using HC-110 or T-max. If you are doing it yourself I found T-max at 68 degrees for 6 min. works well enough (small tank). The only thing you have to watch is your aditation. I found you had to be a little more agressive to keep from getting air bubbles. Hope this helps and have fun!

Thanks very much for the advice, I feel to have a good starting point now. I'll be developing myself in a small tank - probably in T-max dev. Will post the result if I have any sucess!

Tristan,

I've shot quite a bit of IR over the last 6-7 years and have always used 800 iso without any problems. I may still have the instructions for shooting and developing IR film. If you're interested, email me and I'll be glad to send it along.