What camera? Most have a bulb mode so you can keep the shutter open as long as you like. You start to get reciprocal failure after a few seconds and I'm afraid this is where my knowledge of film ends!
Get some Fuji Acros 100, it's reciprocity failure is nice and easy to work with, for anything over a minute, add a stop extra of light. That's pretty much it.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.