Sort:  

Pinhole camera
A pinhole camera is a simple camera without a lens but with a tiny aperture (the so-called pinhole) – effectively a light-proof box with a small hole in one side. Light from a scene passes through the aperture and projects an inverted image on the opposite side of the box, which is known as the camera obscura effect.

Coin Marketplace

STEEM 0.18
TRX 0.16
JST 0.030
BTC 65685.57
ETH 2613.86
USDT 1.00
SBD 2.71