As a 1.4x teleconverter, the focal length of the attached lens is magnified by a factor of 1.4x, with a 1 f/stop reduction in aperture rating, so a 70-200mm f/2.8 zoom effectively becomes roughly a ...

Just like with any 2x teleconverter, the focal length of the attached lens is doubled, with a consequent aperture reduction of two f/stops. As such, a 70-200mm f/2.8 zoom effectively becomes roughly a ...

The new Canon RF 85mm F1.2L USM DS is a complementary lens to the RF 85mm F1.2L USM, with a unique DS coating to achieve a softer bokeh look. With its shallow depth of field capabilities, it’s an ...

This article originally appeared in TV Technology. RF simulation software can provide a graphic display of RF fields; however, measuring them usually involves large anechoic chambers and structures on ...

Completing Canon’s F2.8L trinity series for the mirrorless RF mount, the new RF 70-200mm F2.8L IS USM is the world's shortest and lightest lens with a focal length of 70-200mm and maximum aperture of ...

RF simulation software can provide a graphic display of RF fields; however, measuring them usually involves large anechoic chambers and structures on the order of the wavelength of the RF fields to be ...