Bees have compound eyes, which are composed of 5.000 singular eyes. The picture, which the compound eye sends to the brain, is like a mosaic built out of 5.000 little stones. The bee has less precise vision than a human and can make out fewer details.

A bee sees a mosaic made up of 5.000 dots.
Due to the curvature of the bee's eye its vision is distorted.

A bee sees a mosaic
made up of 5.000 dots.
Due to the curvature of the bee's eye
its vision is distorted.