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PHOTOGRAPHY FEATURES Built-in flash: Yes (Pop-up)
SCREEN / VIEWFINDER Screen size: 3.2″
SCREEN / VIEWFINDER Viewfinder type: Optical (pentaprism)
PHYSICAL Weight (inc. batteries): 640 g (1.41 lb / 22.58 oz)
PHYSICAL Battery Life (CIPA): 950
OTHER FEATURES GPS: Optional
Main
Model
Price
Advantages
SENSOR Effective pixels: 42 megapixels
SENSOR Max resolution: 7952 x 5304
SENSOR Sensor size: Full frame (35.9 x 24 mm)
SENSOR Sensor photo detectors: 44 megapixels
IMAGE Image stabilization: Sensor-shift
PHOTOGRAPHY FEATURES Continuous drive: 10.0 fps
SCREEN / VIEWFINDER Screen dots: 1,440,000
OPTICS & FOCUS Number of focus points: 425
Summary
The Alpha a7R III maximum resolution of 7952 x 5304 pixels (42 megapixels) is better in comparison with the Nikon D7500 maximum resolution of 5568 x 3712 pixels (21 megapixels). The Alpha a7R III is produced with bigger sensor compared to the Nikon D7500: Full frame (35.9 x 24 mm) versus APS-C (23.5 x 15.7 mm). It is the most important specification of this camera as big sensor allows the photographer to capture photos of the more professional quality. The Alpha a7R III has image stabilization that will help the photographer to capture sharp images when using telephoto lenses. The Alpha a7R III offers more focus points than the Nikon D7500: 425 vs 51. More number of focus points means less risk of losing focus lock when following a moving subject.
The Alpha a7R III display is better as it has more screen dots 1,440,000 in comparison to 922,000 dots of the Nikon D7500 screen. The higher dot count display is better for reviewing images on your camera.
The Nikon D7500 has built-in flash. The Nikon D7500 battery life is better in compare to the Alpha a7R III battery life. In accordance with CIPA standards the photographer will be able to make 950 shots with the D7500 and only 650 with the Alpha a7R III. The D7500 weighs 640g that is 17g lighter in comparison with the weight of the Sony Alpha a7R III. The D7500 can utilize optional accessory GPS devices. Recording GPS data can be useful for the travel photographer, to be able to go into the picture metadata and find out exactly where a photo was taken.
Considering the above-mentioned differences the Alpha a7R III is the best buy. Get the lowest price on Amazon