I can't seem to find anything that tells/shows me how to emulate multiple exposures like I used to do in film. With film you could calc the exposure, divide that by the number of multiple exposures and shoot away. (landscape on a tripod: made waves look great)
I'm trying to emulate that in PS. I have multiple exposures from on a tripod and just can't figure out how to make it work in PS. Have, for example, created 2 layers in CS and tried to reduce the opacities of each layer mask by 50%, but no luck.
Any pointers or help would be greatly appreciated.