Pentax 645D vs Sony NEX-5R

Below is a complete assessment of the Pentax 645D and Sony NEX-5R, former being a Pro DSLR while the latter is a Entry-Level Mirrorless by competitors Pentax and Sony. There is a noticeable difference among the image resolutions of the 645D (40MP) and NEX-5R (16MP) and the 645D (Medium format) and NEX-5R (APS-C) come with different sensor dimensions.

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The 645D was unveiled 3 years before the NEX-5R and that is a fairly sizable difference as far as camera tech is concerned. Each of these cameras come with different body type with the Pentax 645D being a Large SLR camera and the Sony NEX-5R being a Rangefinder-style mirrorless camera.

Before diving through a more detailed comparison, below is a concise introduction of how the 645D grades versus the NEX-5R with regards to portability, imaging, features and an overall grade.

This is a preview of the gallery images for Pentax 645D & Sony Alpha NEX-5R. The full galleries are available at Pentax 645D Gallery & Sony NEX-5R Gallery.

If you are going to lug around your camera regularly, you'll need to take into account its weight and volume. The Pentax 645D enjoys physical measurements of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") having a weight of 1480 grams (3.26 lbs) and the Sony NEX-5R has sizing of 111mm x 59mm x 39mm (4.4" x 2.3" x 1.5") accompanied by a weight of 276 grams (0.61 lbs).

Look at the Pentax 645D and Sony NEX-5R in our brand new Camera & Lens Size Comparison Tool.

Always remember, the weight of an ILC will vary depending on the lens you have chosen at that time. Following is the front view over all size comparison of the 645D compared to the NEX-5R.

Factoring in size and weight, the portability rating of the 645D and NEX-5R is 50 and 89 respectively.

In many cases, its difficult to imagine the difference in sensor measurements just by looking through technical specs. The graphic here will offer you a stronger sense of the sensor sizing in the 645D and NEX-5R.

As you can tell, each of these cameras have got different megapixel count and different sensor measurements. The 645D having a bigger sensor is going to make achieving shallow depth of field less difficult and the Pentax 645D will provide you with extra detail having an extra 24MP. Higher resolution will also allow you to crop photographs much more aggressively. The older 645D will be behind with regard to sensor technology.