In photography, depth of field refers to how much of a three-dimensional space the camera can focus on at once. A shallow depth of field, for example, would keep the subject sharp but blur out much of ...

Researchers have developed a new method for flexibly creating various needle-shaped laser beams. These long, narrow beams can be used to improve optical coherence tomography (OCT), a noninvasive and ...

Fluorescence microscopy is a cornerstone imaging technique in biological and biomedical research. It works by labeling specific molecules in a sample with fluorescent dyes that emit light upon ...

In macro photography, one of the biggest challenges in learning how to control focus at extreme magnifications. With depth of field measured in millimeters, even the most mesmerising subjects can ...