Night time photography! Now I am the first to admit that I am very inexperienced regarding night time photography, but recently went out with a good friend to shoot a roll.
Armed with a Nikon FA and a Pentax Takumar 50mm f/1.4 and a roll of Kodak Ultra 400, we hit the streets of Dover, Kent.
Shooting film is a different animal to digital due to reciprocity failure of film and in short if you exposure is longer than 1 second then you must compensate or your film will be drastically under exposed. I used the following formula which seemed to work for me during the evening...
1.5-2 secs = x1.4
2-6 secs = x2
6-15 secs = x2.8
15-35 secs = x4
35-70 secs = x5.6
So if you were metering a scene f/8 at 12 secs, you would need to times the exposure by 2.8 which would be 33 secs. It also goes without saying you need to be shooting on a tripod and using a release cable or self-timer!
Another thing to consider when shooting colour film is whether to correct tungsten lighting with a 80A filter. I chose not to and to correct in post myself and get it near to the colours I remembered while shooting.