Quick question for everyone. I was able to pick up a roll of expired Fujifilm Fujicolor Superia 100 in 120 format from Adorama the other day. I'm planning on using it for natural light portraits next month. I'm not sure how it was stored or what the expiration date is as it's still in transit with UPS. Being that it's an expired film, should I meter it at half of its original ISO or should I just meter it at box speed? I've heard that Superia 100 was ok with over exposing so would it be safer to just shoot it at ISO 25? Thanks for any help.