Pentax 645D vs Sony A77 II

Let's take a closer look at the Pentax 645D and Sony A77 II, one being a Pro DSLR and the latter is a Advanced DSLR by manufacturers Pentax and Sony. There is a significant difference among the resolutions of the 645D (40MP) and A77 II (24MP) and the 645D (Medium format) and A77 II (APS-C) have different sensor dimensions.

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The 645D was announced 5 years prior to the A77 II and that is a fairly sizable gap as far as camera tech is concerned. Each of the cameras have different body design with the Pentax 645D being a Large SLR camera and the Sony A77 II being a Mid-size SLR camera.

Before diving into a thorough comparison, here is a concise highlight of how the 645D matches up versus the A77 II when it comes to portability, imaging, features and an overall grade.

The following is a preview of the gallery photos for Pentax 645D and Sony SLT-A77 II. The whole galleries are viewable at Pentax 645D Gallery and Sony A77 II Gallery.

If you're going to lug around your camera frequently, you'll need to take into account its weight and measurements. The Pentax 645D comes with outer measurements of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") accompanied by a weight of 1480 grams (3.26 lbs) while the Sony A77 II has proportions of 143mm x 104mm x 81mm (5.6" x 4.1" x 3.2") with a weight of 647 grams (1.43 lbs).

Check the Pentax 645D and Sony A77 II in the new Camera with Lens Size Comparison Tool.

Take into account, the weight of an Interchangeable Lens Camera will vary based on the lens you have chosen at that moment. Underneath is a front view size comparison of the 645D compared to the A77 II.

Looking at size and weight, the portability grade of the 645D and A77 II is 50 and 62 respectively.

Usually, it is tough to picture the contrast in sensor measurements purely by looking through specs. The graphic underneath may provide you a stronger sense of the sensor measurements in the 645D and A77 II.

All in all, the 2 cameras provide different resolutions and different sensor measurements. The 645D with its bigger sensor is going to make shooting shallow DOF simpler and the Pentax 645D will render greater detail with its extra 16 Megapixels. Higher resolution will also allow you to crop shots more aggressively. The older 645D will be behind with regard to sensor tech.