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PHOTOGRAPHY FEATURES Built-in flash: Yes
SCREEN / VIEWFINDER Viewfinder type: Optical (pentaprism)
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 White balance presets: 10
PHOTOGRAPHY FEATURES Maximum shutter speed: 1/8000 sec
PHOTOGRAPHY FEATURES Continuous drive: 10.0 fps
SCREEN / VIEWFINDER Screen dots: 1,440,000
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 than the Pentax KP maximum resolution of 6016 x 4000 pixels (24 megapixels). The Alpha a7R III is produced with bigger sensor than the Pentax KP: Full frame (35.9 x 24 mm) versus APS-C (23.5 x 15.6 mm). It is the most significant difference between these cameras as big sensor allows the photographer to take pictures of the higher quality. The Alpha a7R III provides more number of white balance presets - 10. This option gives the photographer more control over colour. The Alpha a7R III offers more focus points than the Pentax KP: 425 vs 27. More focus points means less risk of losing focus lock during following a moving subject.
The Alpha a7R III screen is better as it offers more screen dots 1,440,000 in compare to 921,000 dots of the Pentax KP display. The higher dot count screen is better for reviewing images on your camera.
The Pentax KP is produced with built-in flash. The Alpha a7R III battery life is better than the Pentax KP battery life. In accordance with CIPA standards you will be able to produce 650 shots with the Alpha a7R III and only 390 with the KP. The Sony Alpha a7R III weighs 657g which is 46g lighter than the weight of the KP. The KP can utilize optional accessory GPS devices. Recording GPS data can be convenient if you like to travel, to be able to go into the picture metadata and find out exactly where a photo was taken.
The Alpha a7R III has 11 advantages and the Pentax KP only 3 so the Alpha a7R III becomes the best choice. Get the list of the best offers on Amazon