>>3335611Shoot the Astia at box speed. If the film wasn't cold-stored, the colorcast will be so strong it doesn't matter what it was once good for. 100F goes green when expired (pretty much looks like cross-processed Provia).
>>3335764Pick up a Nikonos V + 35mm 2.5. Since you aren't getting wet you can pick up a cheap copy that probably needs new o-rings for $100. The VF has enough relief to shoot wearing a dive mask, so it should work great for you.
