Sony is a follower of the famous Konica-Minolta corporation in the past. Optics production technologies and the principles of its marking were inherited from her. Thus, professional lenses of the Japanese brand with high optical and mechanical qualities, according to the good old tradition, are marked with the stigma G (Golden).

The “golden” series of modern Sony lenses includes expensive professional models, implying the highest quality of workmanship in all planes. Due to the extinction of Sony DSLRs, the lion's share of them is produced under the guard of full-frame mirrorless cameras of the Japanese company in the guise of fixes and zoom lenses.

Sony G-Master is the evolution of the notorious "golden" series of G lenses.

Since 2016, the "gold" series has evolved into the newly minted G-Master league. Delegates from it have high resolution at any focal length, provide excellent detail across the entire field of the frame, are equipped with advanced autofocus systems and optical image stabilization. Such models are correspondingly expensive.