Olympus E-330 vs Sony A7 III

Below, we will be looking at the Olympus E-330 and Sony A7 III, former is a Advanced DSLR while the latter is a Pro Mirrorless by competitors Olympus and Sony. There exists a large gap among the sensor resolutions of the E-330 (7MP) and A7 III (24MP) and the E-330 (Four Thirds) and A7 III (Full frame) feature different sensor size.

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The E-330 was revealed 13 years before the A7 III which is a fairly serious difference as far as camera technology is concerned. Both of the cameras come with different body type with the Olympus E-330 being a Mid-size SLR camera and the Sony A7 III being a SLR-style mirrorless camera.

Before diving through a detailed comparison, below is a concise introduction of how the E-330 scores versus the A7 III with regards to portability, imaging, features and an overall score.

This is a preview of the gallery images for Olympus E-330 & Sony Alpha A7 III. The full galleries are viewable at Olympus E-330 Gallery & Sony A7 III Gallery.

If you are looking to carry around your camera frequently, you have to factor its weight and dimensions. The Olympus E-330 features external dimensions of 140mm x 87mm x 72mm (5.5" x 3.4" x 2.8") accompanied by a weight of 616 grams (1.36 lbs) while the Sony A7 III has dimensions of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") accompanied by a weight of 650 grams (1.43 lbs).

Compare the Olympus E-330 and Sony A7 III in our completely new Camera & Lens Size Comparison Tool.

Remember, the weight of an ILC will change dependant on the lens you are utilizing at that time. Following is the front view dimension comparison of the E-330 compared to the A7 III.

Taking into account dimensions and weight, the portability grade of the E-330 and A7 III is 65 and 63 respectively.

More often than not, its hard to imagine the contrast in sensor sizes simply by seeing a spec sheet. The pic here should offer you a better sense of the sensor dimensions in the E-330 and A7 III.

As you can see, each of these cameras posses different megapixels and different sensor sizes. The E-330 with its smaller sensor is going to make shooting shallower DOF trickier and the Sony A7 III will show extra detail because of its extra 17MP. Higher resolution will help you crop shots somewhat more aggressively. The more aged E-330 will be disadvantaged in sensor tech.