Tunability in lenses typically requires bulky components, but researchers have created a metasurface lens that uses a piezoelectric thin film to change focal length when a small voltage is applied.

We may receive a commission on purchases made from links. Whether you're a serious enthusiast or a professional photographer, removable-lens cameras have been the tool of choice for the better part of ...

If you're getting started with portrait photography, one of the biggest questions is: what lens should I use for portraits? With the best portrait lenses coming in so many options – from affordable ...