From contrast to color to input lag, I measure and compare home theater and portable projectors using instruments and my own two eyes.

A pinhole projector can be created using common household items, and allows a viewer to see a projection of the sun inside a box, or projected on the ground. How to make your own eclipse pinhole ...

How I test projectors When I test projectors, I try the device on a dedicated projection screen – a 100-inch pull-down screen – and on a white-painted wall.