Why did you need to hide under a blanket like object when taking pictures using an old school camera?
In: Other
When you look at the back of an old school camera, the image of what you’re looking at through the camera lens is projected onto a piece of opaque glass (it’s not clear like a window, but white), and that image is not very bright. It’s not very bright because the only light you’re seeing is what’s allowed to shine through the small opening of your lens.
Covering the camera and shielding it from the outside light makes the image easier to see for composing your shot and getting it into focus.
You can see how this works yourself by turning down the brightness of your phone and reading it while out in bright sunlight, then cover yourself and your screen with a dark cloth to get the same effect.
TL;DR: It’s how you turn up the brightness on an old school camera by blocking out the sun.
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