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The Sony FE 600mm F4 G Master is a telephoto lens for professional use. The image quality, mechanical durability and usability are designed for the most demanding sports and wildlife photography situations. Like the 400mm lens announced last year, this lens is very light compared to its competitors, only about three kilograms. Together with Sony's A9 camera, this forms a very compact and lightweight package considering its features.
The repositioned lens elements mean that the lens's center of gravity is in the center of the lens, at the focus ring. The lightness and center of gravity make the lens exceptionally easy to handle as a super telephoto . The center of gravity is especially helpful when using a monopod, as most of the weight is right at the tripod mount. Tracking fast-moving subjects such as birds or fast-moving sports is easier and faster.
The Sony FE 600mm GM OSS features two linear focus motors (XD Linear Focus). The autofocus keeps up with the 20fps continuous shooting of the flagship a9 body and works in conjunction with Sony's very convenient EyeAF subject tracking autofocus.
The lens has optical image stabilization, which also works in conjunction with the internal image stabilization found in Sony bodies. The image stabilization has a panning setting and a third setting (Mode 3) that stabilizes the camera's viewfinder image. This makes it easier to keep the composition just right even when tracking fast-moving subjects.
Usability and user interface

1. Focus ring
2. Function ring: programmable for focus settings, focus speed adjustment, or changing camera settings
3. Tripod collar: the tripod collar is ball-bearing and allows you to easily change the camera to a vertical shooting position
4. Focus hold button: allows you to program specific focus distances or, for example, activate EyeAF focusing
5. Filter holder
6. Strap loop
7. Tripod mount lock switch
8. Security cable clip

1. Focus mode switch (automatic, manual)
2. Full-time DMF switch: When on, manually adjusts focus even when autofocus is on
3. Focus area limiter
4. Function ring selector switch: Preset mode allows you to save a specific focus distance, while function mode allows you to adjust the function from the camera. Options include smoother and adjustable focus speed (useful for video recording), APS-C mode activation (a bit like a digital teleconverter)
5. SET button: With the SET button you can save the desired focus in memory and thus quickly return to the desired focus point.
6. Image stabilizer switch
7. Image stabilization setting selection: normal, panning, and fast-motion tracking mode
8. BEEP switch
The Sony 600mm G Master is a true professional tool in terms of construction, with a lightweight and durable magnesium alloy body. The alloy is also used in the internal components of the body to ensure durability. Reliability and durability have even been achieved by increasing the number of bayonet mounting screws! The lens's front lens element is coated with fluorine to repel dirt and fingerprints. The lens hood supplied with the lens has also been designed with durability and usability in mind: the material used is now strong and lightweight carbon fiber. The lens is supplied in a hard protective case that protects against impacts and the elements, so you can take the lens with you on even the most demanding shooting gigs.
Sony's 600mm f/4 is compatible with the FE 1.4X and FE 2X teleconverters. The lens's carrying case also has ready-made slots for both teleconverters. The lens comes with a Drop-In filter holder, which allows you to use 40.5mm filters. Sony also offers a circular polarizing filter that can be rotated inside the lens barrel to adjust the polarization effect.
Note: This product is not compatible with the separately purchased Sony 2-year extended warranty.
Specifications:
Sales package includes: Sony FE 600mm f/4 GM OSS lens, hard lockable carrying case, lens strap, tripod mount, bag strap and ALC-SH158 carbon fiber lens hood