Atomic clocks are more accurate than those used to define the second, suggesting the definition might need to change ...

First released for Sony E-mount, the Tokina atx-m 11-18mm F2.8 will soon be available for Fujifilm X-mount users.

Nikon has announced the Nikkor 28-135mm F4 PZ, a lens geared toward professional video shooters, and the company's first full ...