The Sony FE 400mm f/2.8 GM OSS is a long telephoto lens designed for Sony E-Mount, Full frame cameras. It features an advanced autofocus motor that allows AF speeds to support the 20 frames per second of the Sony A9.

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Sample Images:

Specifications

• 400mm f/2.8 E-Mount :: Full-Frame Format
• f/2.8 to f/22 aperture range
• 23 Elements in 17 Groups
• Three Fluorite Elements, 1 ED Element
• Nano AR Coating
• 11 Blade Rounded Diaphragm
• 8.86′ / 270 m minimum focusing distance
• Power Focus
• Optical Steady Shot – 3 modes
• Dual XD Motors for Faster Focus and Tracking
• 6.4 lb / 2.9 kg (much lighter than most lenses this size)
• Balanced element design for weight distribution
• Rotating Tripod Collar
• Weather Sealed

MTF Charts

Sony FE 400mm f/2.8 MTF
[1] Contrast (%) [2] Distance from optical center of lens (mm) [3] Max. aperture [4] F8 aperture [5] Spatial frequency [6] 10 line pairs / mm [7] 30 line pairs / mm [8] R: Radial values T: Tangential values

Video