Sony A7R III vs Sony A33

Following is a in-depth analysis of the Sony A7R III vs Sony A33, former is a Pro Mirrorless while the latter is a Entry-Level DSLR and they are both created by Sony. There is a substantial difference between the image resolutions of the A7R III (42MP) and A33 (14MP) and the A7R III (Full frame) and A33 (APS-C) boast totally different sensor dimensions.

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The A7R III was released 7 years after the A33 which is quite a big difference as far as tech is concerned. Both of these cameras feature different body design with the Sony A7R III being a SLR-style mirrorless camera and the Sony A33 being a Compact SLR camera.

Before going right into a comprehensive comparison, here is a brief view of how the A7R III matches up vs the A33 when considering portability, imaging, features and an overall score.

When you are aiming to carry your camera regularly, you're going to have to take into account its weight and volume. The Sony A7R III provides external measurements of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") accompanied by a weight of 657 grams (1.45 lbs) while the Sony A33 has sizing of 124mm x 92mm x 85mm (4.9" x 3.6" x 3.3") having a weight of 500 grams (1.10 lbs).

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Do not forget, the weight of an ILC will vary depending on the lens you have chosen during that time. Following is the front view size comparison of the A7R III compared to the A33.

Taking into account dimensions and weight, the portability score of the A7R III and A33 is 63 and 67 respectively.

Normally, it is very difficult to imagine the gap in sensor sizing simply by looking through technical specs. The graphic underneath will offer you a greater sense of the sensor sizing in the A7R III and A33.

As you can tell, the 2 cameras enjoy different megapixels and different sensor sizing. The A7R III due to its larger sensor is going to make getting shallower depth of field simpler and the Sony A7R III will result in extra detail having its extra 28MP. Greater resolution will help you crop pics far more aggressively. The newer A7R III provides a benefit with regard to sensor innovation.