Over on YouTube [Applied Science] shows us how to make an f/0.38 camera lens using an oil immersion microscope objective. The f-number of a lens indicates how well it will perform in low-light. To ...

Editor’s Note: Arlo security cameras are among our top favorites, but they can get pricey. We recommend reading our review of the cheapest home security systems for complete protection before making a ...

We may earn a commission from links on this page. There are plenty of good reasons to get your home kitted out with some of the best security cameras on the market: These devices are (usually) ...