I loved tinkering around with the wide -
aperture mode turned on, and though the Mate 9's primary camera aperture doesn't go as low as the competition, it makes up for it with the aid of optical image stabilization.
It's surrounded by a low, metal control ring, that you can
turn to make various adjustments — including white balance, ISO light sensitivity, shutter speed,
aperture and shooting mode (Auto, Aperture priority, Manual
aperture and shooting
mode (Auto,
Aperture priority, Manual
Aperture priority, Manual, etc.).