Question

A water droplet is which lense​

Answer 1

Answer:

A water droplet makes a concave shape that works as a perfect lens, particularly when that water droplet is applied to a repellent surface. The droplet and glass plate was added to an set of aperture blades, which allows the photographer to control the camera’s f-stop. That custom lens was set on top of a digital camera sensor for one of the oddest camera constructions yet, alongside lensless cameras and 3D-printed lenses.