I've bought a Pentax MX which has been modified with what looks like an instant back. The actual film size looks to be about 30mm wide and from what I can find the only candidate is Polaroid i-zone film. If anybody has a pack (or more) still sitting about I'd like to buy some to see whether my suspicions are correct. I looked at eBay but most of the sellers were US sales only and I live in Australia. Can anyone help?