Sony FE 400mm f2.8 GM Zoom Ø82mm

Innovative Optical Design
 
As part of Sony's esteemed G Master series, this lens is designed to achieve a balance of impressive resolution and sharpness along with distinctive and pleasing bokeh.
Large f/2.8 maximum aperture enables working in difficult lighting conditions and also provides extremely shallow depth of field for isolating subjects from busy backgrounds.
Three fluorite elements and one extra-low dispersion element minimize axial and lateral chromatic aberrations, as well as color fringing, for high clarity and color accuracy.
Nano AR coating has been applied to interior lens surfaces to suppress reflections that cause flare and ghosting.
G Master optical design also contributes to low spherical aberrations, for high sharpness, as well as a pleasing bokeh quality that is further benefits by a rounded 11-blade diaphragm.
Fast Focusing and Reliable OSS
 
XD (Extreme Dynamic) Linear Motor System quietly and quickly focuses on fast-moving subjects while shooting at high speeds.
High-precision XD motor system is also complemented by updated AF algorithms for improved responsiveness and quieter operation, further benefitting sports and wildlife applications.
Power Focus functionality for smooth focus during video recording.
Full-time DMF supports manually adjusting focus simply by turning the focusing ring, regardless of the focusing mode, and Linear Response MF provides a natural and responsive focus feeling for more precise manual control.
Focus range limiter switch and preset focus functions increase focusing efficiency either within a certain constrained range or immediately to a specified focusing point.