Sony A7 III vs Sony A55

Below, we will be analyzing the Sony A7 III versus Sony A55, former being a Pro Mirrorless while the latter is a Entry-Level DSLR and both of them are designed by Sony. There exists a noticeable gap between the resolutions of the A7 III (24MP) and A55 (16MP) and the A7 III (Full frame) and A55 (APS-C) come with totally different sensor size.

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The A7 III was launched 7 years later than the A55 and that is quite a sizable difference as far as technology is concerned. Both cameras come with different body type with the Sony A7 III being a SLR-style mirrorless camera and the Sony A55 being a Compact SLR camera.

Before getting straight into a step-by-step comparison, below is a concise summation of how the A7 III matches up against the A55 in terms of portability, imaging, features and an overall grade.

This is a preview of the gallery photos for Sony Alpha A7 III & Sony SLT-A55. The complete galleries are provided at Sony A7 III Gallery & Sony A55 Gallery.

For anyone who is planning to lug around your camera, you should consider its weight and size. The Sony A7 III features external measurements of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") having a weight of 650 grams (1.43 lbs) while the Sony A55 has specifications of 124mm x 92mm x 85mm (4.9" x 3.6" x 3.3") having a weight of 500 grams (1.10 lbs).

Look at the Sony A7 III versus Sony A55 in our newest Camera plus Lens Size Comparison Tool.

Remember, the weight of an ILC will change depending on the lens you are employing at that time. Following is the front view scale comparison of the A7 III and the A55.

Using dimensions and weight, the portability score of the A7 III and A55 is 63 and 67 respectively.

Sometimes, it is difficult to visualise the gap between sensor measurements purely by reviewing technical specs. The visual here should offer you a stronger sense of the sensor sizing in the A7 III and A55.

As you can tell, the 2 cameras have got different megapixel count and different sensor measurements. The A7 III due to its bigger sensor will make achieving shallower depth of field less difficult and the Sony A7 III will deliver extra detail utilizing its extra 8MP. Higher resolution will make it easier to crop shots much more aggressively. The fresher A7 III will have a benefit in sensor technology.