Black and white film can also take color? Red, green and blue filters show their magic power

photographer Jacob Carlson recently released an interesting video of photography skills, and it seems that this skill appears in 2020, and it still has a sense of crossing. In this video, he will show you how to use the “tri color process” 160 years ago to take color photos with black-and-white film</ span>

if you are not familiar with the principle of Tri Color, here is a brief introduction: the Tri Color process represents the origin of color photography. Scottish physicist James Clerk Maxwell first mentioned in a paper published in 1855 that color images can be created by combining black-and-white photos taken through red, green and blue filters. This is still the basis for us to capture color today, and it is also the reason why the sensors in digital cameras have some kind of RGB color filter on the surface of pixels</ span>

the tri color photo made by Scottish physicist James Clerk Maxwell in 1855

as Carlson showed in the video, you can use red, green and blue filters to shoot with black-and-white film. Use these three filters to shoot a photo respectively, and the visual difference of each photo is very subtle</ span>

then synthesize in Photoshop to get the following color images:

red filter

< br > < span > < strong > green filter </strong > < /span>

blue filter

images synthesized by superposition

if you also want to try it for yourself, Carlson shared some useful skills he found when he first tried this ancient technology: in addition to a very solid tripod, an object that can stand still, and the highest quality color filter you can find (he uses a very low-end one, which has a great loss of image quality). He also pointed out that using black-and-white film with high contrast and low dynamic range, You will get better results</ span>

< br > < span > < strong > zenza Bronica etrsi loads Kodak tri-x 400 film </strong > < /span>

he used a medium frame camera, zenza Bronica etrsi, to load Kodak tri-x 400 film, and a 35mm Pentax k1000 to load cinestill bwxx film, but he also suggested using a camera with automatic film filtering function, which can avoid displacement of the camera when passing the film. When scanning, you should also mark the photos with different filters when shooting, so as to avoid confusion. Here are more black-and-white and color contrast pictures taken:

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