The Sigma 20mm f/1.4 DG HSM Art lens features an optical design comprising 15 elements in 11 groups, including F low-dispersion (FLD) and special low-dispersion (SLD) elements, alongside super ...

Learn about the speed, image quality, and general performance tests we run on every digital camera and lens we review. Images, and the devices that capture them, are my focus. I've covered cameras at ...

If you are interested in testing your phone camera lenses and optics, you may be interested in a new testing card name, the µChart. Created by the team responsible for the iMicro Q range of microscope ...

A refraction test is usually given as part of a routine eye examination. It may also be called a vision test. This test tells your eye doctor exactly what prescription you need in your glasses or ...

The first of Zeiss’s six new full-frame, manual-focus Milvus lenses to run the gauntlet of the Popular Photography Test Lab, this is actually the third 85mm f/1.4 in Zeiss’s current catalog (and the ...

As with other brands, Canon's lenses feature many letters and acronyms in the lens names. Seeing something like Canon RF 24-105mm F4L IS USM can leave you scratching your head if you don't know what ...

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 ...