The patent, JP2025-12993, which was published in Japan on January 24, demonstrates the concept of taking one optical system and adding a secondary optical system that can be inserted and removed as ...

But another way of looking at it is like a teleconverter. The latter may make more sense, as the examples in the patent show an increased focal length when the second system is added. While Canon’s ...

Tamron has announced a firmware update for its 50-400mm F4.5-6.3 Di III VC VXD lens, which will allow users who pair it with a Sony a9 III to shoot at up to 120fps. The company says the update also ...