Pinhole cameras are very interesting. In our photo class we have just started to expieriment with them. You need to be carefull when you are shooting with them because if you even have a tiny bit of light that is coming in it will ruin you photo paper inside.
When you shoot your photo it will turn out negative (everything will be the oposite).
You need to have real expirients with them because they look easy to use but they are actually.
If you use them everything will be upsidedown
