While creating my “Bleach Bypass” film simulation recipe, which requires double exposures, I also discovered how to split-tone black-and-white pictures in-camera using double exposures. Split toning was originally a darkroom technique where one would give their black-and-white print a bath in two different toning chemicals, which resulted in shadows and highlights having two different colors. There are many different ways to split tone and many different potential results. This Split-Toned B&W recipe loosely mimics the aesthetic of ferrocyanide toning (blue) with diluted sepia (reddish-brown). You can get similar results very easily with software, but it’s fun to achieve a split tone effect straight out of camera.

For this recipe, you’ll capture the first exposure as normal. I find that increasing the exposure by 1/3 to 2/3 stop over what you might normally do produces better results. For the second exposure, photograph blue paper. I used an 8.5″ x 11″ medium-blue construction paper for my pictures. I like to purposefully make the second exposure out of focus, although I’m not sure that it matters much if you do. You can control the strength of the blue tone by how bright the second exposure is. The darker the exposure, the less blue there will be and the less faded the picture will appear. The brighter the exposure, the more blue there will be and the more faded the picture will appear. It’s fun to experiment with this, because you can vary the look significantly by how you expose the second image. If you want the highlights to be warmer, simply increase the tone of the first exposure to be more warm, or even use the Sepia film simulation instead of Acros. You could use a different color paper, or even use a cool tone instead of warm on the first exposure, if you wanted. You could really play around with this and come up with all sots of different looks.

Exposure 1
Acros
Dynamic Range: DR200
Highlight: +4
Shadow: +4
Tone: +6 (warm)
Color Chrome Effect: Strong
Grain: Weak
Sharpening: +1
Noise Reduction: -4
ISO: Auto, up to ISO 6400
Exposure Compensation: +2/3 to +1 (typically)

Exposure 2
Velvia
Dynamic Range: DR200
Highlight: +4
Shadow: +4
Color: +2
Color Chrome Effect: Strong
Grain: Weak
Sharpening: +1
Noise Reduction: -4
White Balance: Auto, 0 Red & 0 Blue
ISO: Auto, up to ISO 6400
Exposure Compensation: -1 to -3 (typically)

Example photographs, all camera-made JPEGs using this Split-Toned B&W film simulation recipe on my Fujifilm X-T30:

See also: Film Simulation Recipes