Olympus E-M1 III vs Pentax K-7

Below is a in depth overview of the Olympus E-M1 III versus Pentax K-7, former being a Pro Mirrorless while the latter is a Advanced DSLR by competitors Olympus and Pentax. There is a noticeable difference between the resolutions of the E-M1 III (20MP) and K-7 (15MP) and the E-M1 III (Four Thirds) and K-7 (APS-C) come with totally different sensor size.

Photography Glossary

The E-M1 III was unveiled 10 years later than the K-7 and that is quite a sizable difference as far as tech is concerned. Both of the cameras offer different body type with the Olympus E-M1 III being a SLR-style mirrorless camera and the Pentax K-7 being a Mid-size SLR camera.

Before delving through a full comparison, below is a brief view of how the E-M1 III grades versus the K-7 when considering portability, imaging, features and an overall grade.

The following is a preview of the gallery photos for Olympus OM-D E-M1 Mark III & Pentax K-7. The full galleries are provided at Olympus E-M1 III Gallery & Pentax K-7 Gallery.

If you are planning to lug around your camera frequently, you will want to factor in its weight and proportions. The Olympus E-M1 III has got exterior measurements of 134mm x 91mm x 69mm (5.3" x 3.6" x 2.7") having a weight of 580 grams (1.28 lbs) and the Pentax K-7 has measurements of 131mm x 97mm x 73mm (5.2" x 3.8" x 2.9") along with a weight of 750 grams (1.65 lbs).

Check out the Olympus E-M1 III versus Pentax K-7 in our brand new Camera & Lens Size Comparison Tool.

Don't forget, the weight of an ILC will differ dependant on the lens you choose at that moment. Here is the front view over all size comparison of the E-M1 III vs the K-7.

Taking into consideration size and weight, the portability rating of the E-M1 III and K-7 is 67 and 60 respectively.

In many cases, it is very tough to envision the gap between sensor measurements merely by reviewing a spec sheet. The visual here may provide you a much better sense of the sensor measurements in the E-M1 III and K-7.

As you can see, both the cameras enjoy different megapixel count and different sensor measurements. The E-M1 III having a tinier sensor will make getting bokeh more challenging and the Olympus E-M1 III will offer extra detail having an extra 5MP. Higher resolution will also let you crop pictures far more aggressively. The fresher E-M1 III will have a benefit when it comes to sensor technology.