The collodion wet plate process is an early photographic process (19th century) where a glass plate is prepared with chemical solutions, transferred to a camera to expose, and then developed within 15 minutes before it dries.
Wet plate collodion is not sensitive to the colors red, yellow and green and it’s oversensitive to blue and UV, so the image captured in the collodion is at a different wavelength than a modern digital camera.
Images captured on the collodion often look ghostly, with dark tones but bright areas from blue colors, such as eyes. The textures will enhance the vintage, almost horror look of the photos.
Because it processes colors, the Photoshop action works with colored photos. There are 14 wet plate textures to simulate the old glass and 12 color presets to provide additional looks (cross-processing) besides the adjustable color tint.