Tamron 70-180mm F/2.8 Di III VC VXD for Sony E-mount A056

TAMRON 70-180mm F/2.8 Di III VXD (Model A056) — Sony E-Mount

Main Specifications

• Model: A056
• Mount: Sony E-Mount
• Format: Full-Frame Mirrorless
• Focal Length: 70–180mm
• Maximum Aperture: F/2.8
• Minimum Aperture: F/22
• Angle of View (Diagonal): 34°21′–13°42′ (for full-frame mirrorless format)
• Lens Construction: 19 Elements in 14 Groups
• Filter Size: Ø67mm

Optical Design

• XLD (eXtra Low Dispersion) Elements: Included
• LD (Low Dispersion) Elements: Included
• GM (Glass Molded Aspherical) Elements: Included
• Hybrid Aspherical Elements: Included
• BBAR-G2 Coating: Yes
• Exact Number of XLD / LD / GM / Hybrid Aspherical Elements: Not specified on the TAMRON official product page.

Focusing

• Autofocus Drive: VXD (Voice-coil eXtreme-torque Drive)
• AF System: Linear Motor Focus Mechanism
• Floating System: Yes, using two VXD units
• Minimum Object Distance — AF: 0.85m / 33.5in throughout the full zoom range
• Minimum Object Distance — MF at Wide: 0.27m / 10.6in
• Minimum Object Distance — MF at Tele: 0.85m / 33.5in
• Maximum Magnification Ratio — AF: 1:4.6
• Maximum Magnification Ratio — MF at Wide: 1:2
• Maximum Magnification Ratio — MF at Tele: 1:4.6

Important: The 0.27m close-focusing distance at 70mm is available only when the camera is set to manual focus. TAMRON notes that image quality decreases in peripheral areas when shooting in this close range.

Image Stabilization

• Built-In VC (Vibration Compensation): Not specified on the TAMRON official specifications.
• Camera-Based Image Stabilization: TAMRON states that the image stabilization features of the host camera body are utilized.

Aperture & Filter

• Maximum Aperture: Constant F/2.8
• Minimum Aperture: F/22
• Aperture Blades: 9
• Diaphragm: Circular Diaphragm
• Filter Diameter: Ø67mm
• Filter Thread Pitch: Not specified on the TAMRON official website.

TAMRON states that the circular diaphragm stays almost perfectly circular up to two stops down from maximum aperture.

Sony Camera Features

TAMRON officially lists compatibility with the following Sony camera-specific features:

• Fast Hybrid AF: Supported
• Eye AF: Supported
• Direct Manual Focus (DMF): Supported
• In-Camera Lens Correction: Supported for shading, chromatic aberration and distortion
• Camera-Based Lens Firmware Updates: Supported

Available functions vary depending on the camera model.

Protection & Design

• Moisture-Resistant Construction: Yes
• Fluorine Coating: Yes
• Internal Zoom: Not specified on the TAMRON official website.
• Tripod Collar: Not specified on the TAMRON official website.

Dimensions & Weight

• Maximum Diameter: Ø81mm
• Length: 149mm / 5.9in
• Weight: 810g / 28.6oz

The official 149mm length is measured from the front tip of the lens to the lens mount face.