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Price
Advantages
PHOTOGRAPHY FEATURES Minimum shutter speed: 60 sec
PHOTOGRAPHY FEATURES Continuous drive: 12.0 fps
SCREEN / VIEWFINDER Screen size: 3.2″
SCREEN / VIEWFINDER Screen dots: 1,620,000
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 ISO: Auto, 100-32000 (expands to 50-102400)
IMAGE Boosted ISO (minimum): 50
IMAGE White balance presets: 10
PHOTOGRAPHY FEATURES Subject / scene modes: Yes
OPTICS & FOCUS Number of focus points: 425
PHYSICAL Weight (inc. batteries): 657 g (1.45 lb / 23.17 oz)
PHYSICAL Battery Life (CIPA): 650
Summary
The Alpha a7R III maximum resolution of 7952 x 5304 pixels (42 megapixels) is better in comparison with the Lumix DC-GH5 highest resolution of 5184 x 3888 pixels (20 megapixels). The Alpha a7R III has larger sensor than the Lumix DC-GH5: Full frame (35.9 x 24 mm) versus Four Thirds (17.3 x 13 mm). It is the most important difference between these models because big sensor lets the photographer to take pictures of the more professional quality. The Alpha a7R III offers a wider ISO range of 100-32000 in compare with 200-25600 ISO range of the Lumix DC-GH5. Such ISO numbers allow the photographer to take good quality pictures in dim light conditions. The Alpha a7R III has more number of white balance presets - 10. This specification gives the photographer more control over colour. The Alpha a7R III offers more focus points in compare with the Lumix DC-GH5: 425 vs 225. More number of focus points means less risk of losing focus lock while tracking a moving object.
The Lumix DC-GH5 display is better as it offers more screen dots 1,620,000 in comparison to 1,440,000 dots of the Alpha a7R III display. The higher dot count display is better for reviewing photos on your camera. The Lumix DC-GH5 has better lowest shutter speed - 60 seconds.
The Alpha a7R III battery life is better than the Lumix DC-GH5 battery life. According to CIPA standards you will be able to take 650 photos with the Alpha a7R III and only 410 with the Lumix DC-GH5. The Alpha a7R III weighs 657g that is 68g lighter in comparison with the weight of the Panasonic Lumix DC-GH5.
Taking into account the above-mentioned differences the Sony Alpha a7R III is the best choice. Check the list of the best offers on Amazon