Nikon 18-70mm f/3.5-4.5 G-AFS ED-IF DX Autofocus Lens

Nikon AF-S DX Zoom-Nikkor 18-70mm f/3.5-4.5G IF-ED Lens
Premium DX Standard Zoom – Silent Wave Motor, Triple ED Glass Layout & Internal Focusing Design
The Nikon AF-S DX Zoom-Nikkor 18-70mm f/3.5-4.5G IF-ED is a highly regarded, premium standard zoom lens engineered specifically for Nikon’s crop-sensor (DX-format) digital SLR camera systems. Spanning a highly versatile 27-105mm full-frame equivalent focal range, this high-grade walkaround zoom covers everything from broad wide-angle landscapes to mid-telephoto portrait constraints. Designed as an upgraded single-lens solution for advanced enthusiasts and demanding hobbyists, it balances a practical physical footprint with significantly higher structural and optical performance than standard kit lenses.

The core optical blueprint is optimized to deliver outstanding color fidelity, resolution, and edge-to-edge frame contrast. To minimize chromatic aberrations and geometric distortion throughout the zoom range, the optical layout incorporates three premium Extra-Low Dispersion (ED) glass elements alongside a specialized aspherical lens element. Driven by an integrated Silent Wave Motor (SWM) for fast, quiet, and highly precise autofocus tracking, the lens also features a robust Internal Focusing (IF) architecture that keeps the physical length stable during operation to promote superior handling.

Key Features & DX Optical Performance
Versatile 27-105mm Equivalent Reach: Spans from a classic wide-angle perspective down to a compressed portrait focal length, serving as a highly adaptable general-purpose production asset.

Triple ED Glass & Aspherical Architecture: Features an advanced layout pairing three Extra-Low Dispersion elements with one aspherical lens element to minimize color fringing, chromatic aberrations, and peripheral distortion for crisp rendering.

Nikon Super Integrated Coating (SIC): Applied to individual glass surfaces to systematically suppress internal reflections, surface ghosting, and lens flare, ensuring high contrast and accurate color reproduction.

Swift and Quiet Silent Wave Motor (SWM): Outfitted with Nikon’s proprietary core SWM engine to handle autofocus acquisition quickly, accurately, and silently—making it highly effective for both still capture and video.

Instant M/A Focus Override Mode: Features an optimized manual-to-autofocus switching algorithm. Simply rotating the focus ring permits immediate manual focus adjustments during active AF servo operation with virtually no time lag.

Internal Focusing (IF) Blueprint: Engineered to shift only the internal optical groups during focus tracking. This design prevents the front filter ring from rotating, keeps the physical lens length stable, and promotes optimal weight balance.

Rounded 7-Blade Diaphragm Iris: Employs a circular seven-blade aperture array to yield a smooth, natural, and pleasing out-of-focus background falloff.

G-Type Lens Logic: Streamlined electronic configuration with no physical aperture ring, allowing for simple, seamless exposure control directly from the camera body’s command dials.

Format Compatibility Notice
Important Usage Note: This is a dedicated DX-format lens. It is designed specifically for Nikon digital SLR camera bodies featuring the smaller APS-C sized sensor (such as the D40, D90, D3000, D5000, D7000-series, and D500). It is not recommended for use on 35mm film SLRs or full-frame (FX-format) digital bodies, where it will cause heavy automatic edge vignetting unless cropped electronically via camera sensor modes.

Technical Specifications
Lens Classification: High-Performance DX Standard Zoom

Lens Mount Type: Nikon F-Mount Native (G-Type AF-S Interface)

Format Compatibility: Nikon DX-Format Only (35mm Full-Frame Equivalent: 27 to 105mm)

Focal Length Range: 18 to 70mm

Maximum Aperture Profile: f/3.5 to 4.5

Minimum Aperture Profile: f/22 to 29

Optical Formula Construction: 15 Elements in 13 Groups (3 ED / 1 Aspherical Element)

Diaphragm Design: 7-Blade Rounded Iris Matrix

Minimum Focus Distance: 1.25 feet / 38 cm

Filter Thread Interface: 67 mm

Dimensions (Diameter x Length): Approx. 2.9 x 3.0 inches / 73.0 x 75.5 mm

Weight: Approx. 13.8 oz / 390 g