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)

Photographer:
peropero
Uploaded:
2011-05-10
Tags:
black blanco bw dream filter grain grainy grano ilford infrared infrarrojo nature negro red sfx200 slow speed sunny tree white
Camera:
Canon AE-1
Film:
Ilford SFX
City:
Santiago
Country/region:
Chile
Year:
2011
Time:
noon
Albums:
First Infrared Shots
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