I've been exploring the age old process of Trichrome photography for the last couple of years. It's the process of making colour images using simply black and white film and RGB filters. 3 black and white negatives are needed for each image, each filtered with one of the Red, Green and Blue filters. The negatives are developed, scanned and then combined in software. The combining produces the colours and it's very possible to create photo realistic colour images that look like they were taken with colour film. In fact I've done so, even with 7x17 inch Ultra Large Format film. The look great but you really have ask what is the point.
After much experimenting I found that by combing the process with very long exposures of several minutes and scenes with moving elements like clouds, water and vegetation you can sometimes produce dramatic images. You can induce surreal colours and effects that simply weren't present at any point in time in the scene but still it is recognisable but somewhat "odd".
I use a variety of pinhole camera's to aid the length of exposure and to add another level of "oddness" to the scene. Slow medium or large format film and deep colour filters. This part is pleasure. The software part is the necessary evil.
I've had great fun exploring and growing as an artist with this and I hope you enjoy looking at the images and much as I did making them.