Nikon's DX ultra-wide zoom — 18-36mm equiv at constant f/4 with AF-S motor and ED glass.
The Nikon AF-S DX Nikkor 12-24mm f/4G IF-ED launched in 2003 as Nikon's first DX-format ultra-wide zoom, covering 18-36mm equivalent. It was the reference DX ultra-wide for years before the 10-24mm and third-party alternatives appeared.
Optically very good — sharp across the frame with well-controlled distortion for an ultra-wide. The constant f/4 aperture provides consistent exposure. ED glass controls chromatic aberration. AF-S motor is fast and quiet. Internal focus design.
Nikon F mount, DX format with 77mm filter thread — accepts standard screw-on filters. Approximately 465g. No weather sealing. Minimum focus distance 30cm. G-type. Gold-ring designation — professional DX tier.
Available used at mid-range prices. The 10-24mm f/3.5-4.5G provides wider coverage. The Tokina 11-16mm f/2.8 is faster. This was the original DX ultra-wide standard — sharp and reliable. Check for smooth focus and zoom action. Good value if 18mm equivalent is wide enough.