Sony FE 40mm F2.5 G Full Frame Ultra Compact Prime G Lens for E-Mount SEL40F25G Power Bank a9 provides continuous tracking of

a9 provides continuous tracking of moving subjects for foolproof AF/AE while traditional SLRs can only challenge such AF/AE performance improvements

4000 mAh matte black slim profile charging case

With UHS Video Speed Class 30 (V30) for 32GB-256GB cards and UHS Speed Class 3 (U3) ratings

or Mac OS X or above

Sony FE 40mm F2.5 G Full Frame Ultra Compact Prime G Lens for E-Mount SEL40F25G Power Bank a9 provides continuous tracking ofCompact, superbly built standard prime lens Sony FE 40mm F2. 5 G Full Frame Ultra Compact Standard Prime G Lens SEL40F25G Sony's FE 40mm F2. 5 G lens delivers high resolution and beautiful bokeh in an ultra compact lightweight package, featuring aspherical lens elements for sharp detail across the entire image and an ED (Extra low Dispersion) glass element to reduce chromatic aberration. Its dual linear autofocus motors keep up with the most demanding