[Makers Mashup] shows in a video how to use an adjustable IR filter to cut out all the light ... to 750nm and is made to screw into a 72mm lens, but it works fine with your eyeballs, too.
I recently learned of a fun hack photographers can perform on the Sony DCS-F828 digital camera of the 2002 vintage. I happen ...
To reproduce Aerochrome, [Joshua] takes three monochromatic photos with his infrared film, each with a different color filter chosen to match the spectral sensitivities of the original product.