85mm lenses are the traditional focal length of choice for portraiture, but on the other hand, they are certainly not the only option. 135mm lenses have long been a popular alternative, and there are some high-quality choices out there, such as the Sony FE 135mm f/1.8 GM. This excellent video review takes a look at the lens, its performance and image quality, and what makes it unique among other high-end portraiture options.