I'm planning to place five successive exposures along a 4x5 piece of film by making an initial exposure and then inserting the dark slide to cover some of the film and then making further exposures and advancing the dark slide as I proceed.
For the sake of consistency I'll leave the shutter speed constant and make the exposure changes only with the iris diaphragm.
At moderate shutter speeds there shouldn't be any reciprocity failure or intermittency problems, I think.
Does the following sequence look right to deliver a row of cumulative exposures half a stop apart?
1. Expose at f22 and then push the dark slide so it covers one fifth of the film.
2. Expose at f32 and then push the dark slide so it now covers two fifths of the film.
3. Expose at f32 and then push the dark slide so it now covers three fifths of the film.
4. Expose at f22 and then push the dark slide so it now covers four fifths of the film.
5. Expose at f16 and then push the dark slide all the way to cover the film.
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