Panasonic G3 vs Sony A77

Its time to look more closely at the Panasonic G3 and Sony A77, one being a Entry-Level Mirrorless and the other is a Advanced DSLR by rivals Panasonic and Sony. There is a sizeable difference between the image resolutions of the G3 (16MP) and A77 (24MP) and the G3 (Four Thirds) and A77 (APS-C) posses totally different sensor dimensions.

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The G3 was manufactured 3 months earlier than the A77 so they are both of a similar generation. Both cameras feature different body design with the Panasonic G3 being a SLR-style mirrorless camera and the Sony A77 being a Mid-size SLR camera.

Before getting straight to a full comparison, here is a short view of how the G3 grades against the A77 in terms of portability, imaging, features and an overall grade.

The following is a sample of the gallery pictures for Panasonic Lumix DMC-G3 and Sony SLT-A77. The entire galleries are available at Panasonic G3 Gallery and Sony A77 Gallery.

For anybody who is going to lug around your camera, you should think about its weight and dimensions. The Panasonic G3 has got outer dimensions of 115mm x 84mm x 47mm (4.5" x 3.3" x 1.9") having a weight of 336 grams (0.74 lbs) and the Sony A77 has dimensions of 143mm x 104mm x 81mm (5.6" x 4.1" x 3.2") accompanied by a weight of 732 grams (1.61 lbs).

See the Panasonic G3 and Sony A77 in the all new Camera and Lens Size Comparison Tool.

Take into account, the weight of an Interchangeable Lens Camera will change based on the lens you have chosen at that time. Below is a front view measurements comparison of the G3 and the A77.

Looking at size and weight, the portability rating of the G3 and A77 is 83 and 59 respectively.

Usually, it is very hard to see the difference between sensor measurements purely by checking technical specs. The photograph below will help offer you a much better sense of the sensor sizes in the G3 and A77.

As you can tell, both cameras come with different resolutions and different sensor measurements. The G3 featuring a tinier sensor will make achieving shallower depth of field harder and the Sony A77 will resolve more detail due to its extra 8 Megapixels. Greater resolution will enable you to crop images a good deal more aggressively.