Sony A7R III vs Sony A390

Below, we are matching up the Sony A7R III and Sony A390, former being a Pro Mirrorless while the other is a Entry-Level DSLR and both of them are built by Sony. There exists a substantial gap between the resolutions of the A7R III (42MP) and A390 (14MP) and the A7R III (Full frame) and A390 (APS-C) use different sensor sizing.

Photography Glossary

The A7R III was unveiled 7 years later than the A390 and that is quite a big difference as far as technology is concerned. Both of these cameras come with different body type with the Sony A7R III being a SLR-style mirrorless camera and the Sony A390 being a Compact SLR camera.

Before delving straight into a in depth comparison, below is a brief summary of how the A7R III scores against the A390 in regards to portability, imaging, features and an overall rating.

Following is a sample of the gallery pics for Sony Alpha A7R III & Sony Alpha DSLR-A390. The full galleries are provided at Sony A7R III Gallery & Sony A390 Gallery.

For those who are aiming to carry your camera, you will need to think about its weight and volume. The Sony A7R III has exterior dimensions of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") and a weight of 657 grams (1.45 lbs) whilst the Sony A390 has sizing of 128mm x 97mm x 86mm (5.0" x 3.8" x 3.4") along with a weight of 549 grams (1.21 lbs).

See the Sony A7R III and Sony A390 in our completely new Camera plus Lens Size Comparison Tool.

Remember that, the weight of an ILC will vary dependant on the lens you are working with at that time. Below is the front view physical size comparison of the A7R III and the A390.

Taking into consideration dimensions and weight, the portability grade of the A7R III and A390 is 63 and 66 respectively.

Quite often, it is hard to picture the gap between sensor sizing just by reading technical specs. The visual here will provide you a clearer sense of the sensor dimensions in the A7R III and A390.

As you have seen, both of those cameras posses different megapixels and different sensor sizing. The A7R III using its larger sensor is going to make shooting shallow depth of field easier and the Sony A7R III will offer greater detail having an extra 28MP. Greater resolution can also enable you to crop photos somewhat more aggressively. The younger A7R III should have a benefit when it comes to sensor technology.