Pentax 645D vs Pentax Q

Here is a comprehensive review of the Pentax 645D versus Pentax Q, one being a Pro DSLR and the other is a Entry-Level Mirrorless and they are both created by Pentax. There exists a big gap among the image resolutions of the 645D (40MP) and Q (12MP) and the 645D (Medium format) and Q (1/2.3") use different sensor sizing.

Photography Glossary

The 645D was introduced 15 months prior to the Q making the cameras a generation apart from one another. Both the cameras offer different body type with the Pentax 645D being a Large SLR camera and the Pentax Q being a Rangefinder-style mirrorless camera.

Before going through a in-depth comparison, below is a simple summation of how the 645D grades vs the Q in the way of portability, imaging, features and an overall rating.

The following is a sample of the gallery pics for Pentax 645D and Pentax Q. The whole galleries are available at Pentax 645D Gallery and Pentax Q Gallery.

If you're going to carry your camera often, you have to factor its weight and dimensions. The Pentax 645D features external measurements of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") with a weight of 1480 grams (3.26 lbs) while the Pentax Q has dimensions of 98mm x 57mm x 31mm (3.9" x 2.2" x 1.2") having a weight of 180 grams (0.40 lbs).

Compare the Pentax 645D versus Pentax Q in the new Camera and Lens Size Comparison Tool.

Do not forget, the weight of an Interchangeable Lens Camera will change depending on the lens you are working with at the time. Here is the front view physical size comparison of the 645D compared to the Q.

Looking at dimensions and weight, the portability score of the 645D and Q is 50 and 93 respectively.

Typically, it is difficult to imagine the gap in sensor sizing purely by seeing a spec sheet. The visual below should give you a greater sense of the sensor measurements in the 645D and Q.

Clearly, each of these cameras offer different resolutions and different sensor sizing. The 645D having a larger sensor is going to make getting bokeh simpler and the Pentax 645D will produce extra detail using its extra 28MP. Greater resolution can also make it easier to crop photos a little more aggressively. The older 645D will be behind in sensor technology.