Article: You can also cover your container completely with aluminum, but be sure to avoid any tearing. Covering your camera prevents any light reflection from occurring on the inside of the can.  Make sure you paint the entire lid of your container. Allow the paint to dry completely before moving on to the next step. If any paint chips off before your use your camera, make sure to repaint it before taking any photos.

What is a summary?
Paint your container black inside and out.