Sony G3 vs Sony A77

On this page, we will be comparing the Sony G3 and Sony A77, one is a Small Sensor Compact and the latter is a Advanced DSLR and they are both offered by Sony. There exists a crucial gap among the sensor resolutions of the G3 (10MP) and A77 (24MP) and the G3 (1/2.3") and A77 (APS-C) have different sensor sizes.

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The G3 was introduced 3 years earlier than the A77 which is a fairly serious gap as far as camera technology is concerned. Both of these cameras have different body design with the Sony G3 being a Compact camera and the Sony A77 being a Mid-size SLR camera.

Before we go right into a comprehensive comparison, here is a short view of how the G3 scores against the A77 in relation to portability, imaging, features and an overall score.

Here is a preview of the gallery images for Sony Cyber-shot DSC-G3 and Sony SLT-A77. The whole galleries are provided at Sony G3 Gallery and Sony A77 Gallery.

When you are planning to carry around your camera frequently, you will have to consider its weight and dimensions. The Sony G3 offers physical measurements of 97mm x 59mm x 22mm (3.8" x 2.3" x 0.9") accompanied by a weight of 185 grams (0.41 lbs) whilst the Sony A77 has dimensions of 143mm x 104mm x 81mm (5.6" x 4.1" x 3.2") having a weight of 732 grams (1.61 lbs).

Look at the Sony G3 and Sony A77 in the latest Camera with Lens Size Comparison Tool.

Remember, the weight of an Interchangeable Lens Camera will differ based on the lens you use at that time. The following is a front view size comparison of the G3 versus the A77.

Factoring in dimensions and weight, the portability score of the G3 and A77 is 94 and 59 respectively.

Normally, it can be tough to visualize the gap in sensor sizes just by seeing a spec sheet. The picture here might offer you a stronger sense of the sensor measurements in the G3 and A77.

As you can see, the 2 cameras have different megapixel count and different sensor sizes. The G3 with its smaller sensor is going to make getting shallow DOF trickier and the Sony A77 will show extra detail using its extra 14 Megapixels. Higher resolution will also help you crop pictures a bit more aggressively. The more aged G3 will be disadvantaged with regard to sensor technology.