Grainy Infrared

I was so scared of the super dark IR filter that I ended up overexposing everything. :(
I dont know why the pictures turned out so grainy though. Might it be because I set the ISO of the camera on 25?
(If you know about IR photography I'm all ears about eventual tips and tricks :D)

Fotografo:
peropero
Caricato:
2011-05-10
Tags:
black blanco bw dream filter grain grainy grano ilford infrared infrarrojo nature negro red sfx200 slow speed sunny tree white
Fotocamera:
Canon AE-1
Pellicola:
Ilford SFX
Cittá:
Santiago
Paese:
Chile
Anno:
2011
Time:
noon
Album:
First Infrared Shots
Altre foto di peropero