Abbreviation: G = "G-type Nikkor" (Nikon)
The abbreviation G means "G-type Nikkor" and is seen on Nikon products.
Explanation from Nikon
The G-type NIKKOR has no aperture ring; aperture should be selected from camera body.
See examples of effected products
 | Nikon AF DX 10.5mm F2.8 G ED Fisheye |
 | Nikon AF-S 24-70mm F2.8 G ED |
 | Nikon AF-S DX 35mm F1.8 G |
See links
| nikonusa.com |