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PHOTOGRAPHY FEATURES Continuous drive: 20.0 fps
OPTICS & FOCUS Number of focus points: 693
PHYSICAL Weight (inc. batteries): 673 g (1.48 lb / 23.74 oz)
Main
Model
Price
Advantages
SENSOR Effective pixels: 46 megapixels
SENSOR Max resolution: 8256 x 5504
SENSOR Sensor size: Full frame (35.9 x 23.9 mm)
SENSOR Sensor photo detectors: 47 megapixels
IMAGE ISO: Auto, 64-25600 (expands to 32-102400)
IMAGE Boosted ISO (minimum): 32
IMAGE White balance presets: 14
SCREEN / VIEWFINDER Screen dots: 2,359,000
SCREEN / VIEWFINDER Viewfinder type: Optical (pentaprism)
PHYSICAL Battery Life (CIPA): 1840
Summary
The Nikon D850 highest resolution of 8256 x 5504 pixels (46 megapixels) is better in comparison with the Alpha a9 highest resolution of 6000 x 4000 pixels (24 megapixels). The Nikon D850 has larger sensor than the Alpha a9: Full frame (35.9 x 23.9 mm) versus Full frame (35.6 x 23.8 mm). It is the most important difference between these cameras as large sensor lets you to make pictures of the higher quality. The Nikon D850 has a wider ISO range of 64-25600 than 100-51200 ISO range of the Alpha a9. Such ISO range let the photographer to make good quality pictures in low light situations. The Nikon D850 provides more number of white balance presets - 14. This specification gives you more control over colour. The Alpha a9 offers more number of focus points than the Nikon D850: 693 vs 151. More number of focus points means more convenience when attempting to focus on objects which are not centred.
The Nikon D850 display is better as it has more number of screen dots 2,359,000 in compare to 1,440,000 dots of the Alpha a9 screen. The higher dot count display is better for reviewing images on your camera.
The Nikon D850 battery life is better in compare to the Alpha a9 battery life. In accordance with CIPA standards you will be able to make 1840 photos with the D850 and only 650 with the Alpha a9. The Sony Alpha a9 weighs 673g that is 332g lighter in comparison with the weight of the Nikon D850.
The D850 has 10 advantages and the Alpha a9 only 3 so the D850 is the best choice. Check the lowest price on Amazon