How do I figure exposure for multiple exposures?

[fish4570]

I want to use a Yashica A to make a multi-exposure shot, at least three and maybe four. How do I figure the exposure?
Color or black and white best?

[Scheimpflug]

I think as a general rule, you just divide it up.

So for example, if the shot meters at f/8 1/60th of a second, you could double-expose it as two f/8 1/120th shots. Or you could get the same effect by shooting two f/11 1/60th shots. If your camera or lens lets you adjust by less than a full stop, you could even do an uneven ratio (say, 2/3 of the exposure to the first shot and 1/3 to the second) to make one of the images dominant.

It is all a bit experimental though, and depends on the scene. It could be that you can merge three or four shots in what would seem mathematically to be a certain overexposure, but because the highlights are in different places, they end up just fine on the film.

[fish4570]

Thank you, sir. I am glad it is simple arithmetic ...

[trev]

The usual rule is half a stop per exposure, so for 4 multi exposures its 2 stops

[fish4570]

Thanks, Trev ...