I've tested the most expensive digital cameras on the market—but this humble black‑and‑white Pentax makes me smile the most.

When you use DPReview links to buy products, the site may earn a commission. Photo: SetWillFree Most of us have a few ideas of what we'd do with the gear of our dreams if we ever get our hands on it; ...

Abstract: Camera-based respiration monitoring has gained popularity in research and application in the last decade due to its non-contact and ubiquitous nature. It typically applies optical flow ...