Pentax 645D vs Sony A77

Here is a comprehensive analysis of the Pentax 645D vs Sony A77, one being a Pro DSLR and the other is a Advanced DSLR by rivals Pentax and Sony. There exists a sizeable gap between the resolutions of the 645D (40MP) and A77 (24MP) and the 645D (Medium format) and A77 (APS-C) possess different sensor dimensions.

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The 645D was announced 19 months earlier than the A77 making the cameras a generation apart from one another. Each of the cameras offer different body type with the Pentax 645D being a Large SLR camera and the Sony A77 being a Mid-size SLR camera.

Before going in to a comprehensive comparison, below is a concise highlight of how the 645D grades versus the A77 for portability, imaging, features and an overall rating.

Here is a sample of the gallery pics for Pentax 645D and Sony SLT-A77. The whole galleries are provided at Pentax 645D Gallery and Sony A77 Gallery.

When you are intending to carry your camera, you will need to think about its weight and volume. The Pentax 645D offers outer dimensions of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") accompanied by a weight of 1480 grams (3.26 lbs) whilst the Sony A77 has sizing of 143mm x 104mm x 81mm (5.6" x 4.1" x 3.2") accompanied by a weight of 732 grams (1.61 lbs).

Take a look at the Pentax 645D vs Sony A77 in the latest Camera and Lens Size Comparison Tool.

Remember, the weight of an Interchangeable Lens Camera will differ dependant on the lens you are employing at that moment. Underneath is the front view physical size comparison of the 645D versus the A77.

Considering dimensions and weight, the portability grade of the 645D and A77 is 50 and 59 respectively.

Quite often, it can be tough to visualize the contrast between sensor sizing only by reading specifications. The photograph here will help provide you a greater sense of the sensor dimensions in the 645D and A77.

To sum up, both of these cameras enjoy different megapixel count and different sensor sizing. The 645D using its larger sensor is going to make getting shallower depth of field simpler and the Pentax 645D will offer extra detail with its extra 16 Megapixels. Greater resolution will also help you crop pics far more aggressively. The older 645D is going to be disadvantaged when it comes to sensor innovation.