Olympus E-M1 vs Sony A33

Below, we will be analyzing the Olympus E-M1 and Sony A33, former being a Pro Mirrorless while the latter is a Entry-Level DSLR by brands Olympus and Sony. The sensor resolution of the E-M1 (16MP) and the A33 (14MP) is pretty similar but the E-M1 (Four Thirds) and A33 (APS-C) enjoy different sensor measurements.

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The E-M1 was manufactured 3 years later than the A33 and that is quite a serious difference as far as tech is concerned. Both cameras come with different body type with the Olympus E-M1 being a SLR-style mirrorless camera and the Sony A33 being a Compact SLR camera.

Before diving in to a full comparison, below is a short highlight of how the E-M1 matches up versus the A33 when considering portability, imaging, features and an overall rating.

Following is a preview of the gallery images for Olympus OM-D E-M1 & Sony SLT-A33. The entire galleries are available at Olympus E-M1 Gallery & Sony A33 Gallery.

For those who are aiming to carry your camera, you will have to take into account its weight and size. The Olympus E-M1 comes with physical dimensions of 130mm x 94mm x 63mm (5.1" x 3.7" x 2.5") along with a weight of 497 grams (1.10 lbs) whilst the Sony A33 has specifications of 124mm x 92mm x 85mm (4.9" x 3.6" x 3.3") along with a weight of 500 grams (1.10 lbs).

Look at the Olympus E-M1 and Sony A33 in our newest Camera & Lens Size Comparison Tool.

Remember that, the weight of an ILC will vary depending on the lens you are working with at that moment. The following is the front view size comparison of the E-M1 versus the A33.

Taking into account size and weight, the portability rating of the E-M1 and A33 is 71 and 67 respectively.

Often, it is very difficult to imagine the difference between sensor sizing purely by reviewing technical specs. The photograph underneath will provide you a more clear sense of the sensor sizes in the E-M1 and A33.

As you can tell, both cameras have got different megapixels and different sensor sizing. The E-M1 due to its tinier sensor is going to make shooting shallow depth of field tougher and the Olympus E-M1 will offer extra detail due to its extra 2MP. Higher resolution will help you crop shots much more aggressively. The newer E-M1 provides an edge with regard to sensor innovation.