Join me as I pick the best lenses for astrophotography fans shooting a starry night sky, to suit a range of cameras and budgets. I think that the best lenses for astrophotography are vital for getting ...

We’ve always been big fans of Sony’s top-flight G Master lenses. They’re big and beautiful, but expensive, designed to suit the best Sony cameras for professionals. These lenses aim for the ultimate ...

Want to preserve the planetary parade or capture the Lynx constellation? The best lenses for astrophotography can help you take beautiful, breathtaking images of the night sky. If you're stepping ...

On the blink: you should have an eye check-up at least every two years Contact lens shopping can be an expensive enterprise, and many shy away from finding cheaper options in the fear they can be ...

Images, and the devices that capture them, are my focus. I've covered cameras at PCMag for the past 13 years, which has given me a front row seat for the DSLR to mirrorless transition, the ...

Valerion’s VisionMaster Max can be upgraded with alternate lenses so you can install it closer or farther from a screen without sacrificing resolution. Valerion’s VisionMaster Max can be ...

Answer: The two types of lenses are concave lenses and convex lenses. Is the convex lens’s focal length taken as negative or positive? Answer: The convex lens’s focal length is taken as ...

The IAEA invites Member States to participate in the next ConvEx-3, the IAEA’s highest level and most complex emergency exercise. Hosted by Romania on 14 and 15 May 2025, this major exercise will ...

These new glasses aim to do away with the need to put the display directly in the lenses of the glasses. Instead, it relies on what Halliday calls the “DigiWindow,” a near-eye display that ...

Injection molding: a lot harder than you'd think! I picked up a benchtop injection molding machine to play with, and thought ...

When you wear contact lenses, they should float on the surface of your eye. They can slide slightly with every blink but generally stay in sync with your eyeball. Clear vision and comfortable ...