Kenko has announced the second version of its 400mm f/8 telephoto mirror lens. The new version features optical tweaks to improve image quality, compared to the previous model (which came out in July ...

Success in the trade show and events industry often hinges on the ability to reflect on what works and focus on what truly matters. In the world of displays and visual appeal, two fundamental elements ...

We may earn revenue from the products available on this page and participate in affiliate programs. Learn more › Believe it. Adoram’s ProOptic 500mm f/6.3 ($160, direct; adorama.com) shares all the ...

This is technically known as a catadioptric lens and has an unusual construction of mirrors and lens elements. As well as glass elements there are mirrors at the front and rear to fold the light as it ...

Kenko Tokina is releasing a 400mm f/8 mirror lens for Micro Four Thirds and Sony NEX cameras on Thursday in Japan. The lens will sell for around ¥22,000. Kenko Tokina is releasing a 400mm f/8 mirror ...

[Robb] has had a little experience making lenses from scratch. His first attempt was for a DIY projector, and while the lens was a little blurry, it did work rather well for something carved out of a ...