Sigma DP3 Merrill vs Sony A7R III

Below is a in-depth assessment of the Sigma DP3 Merrill vs Sony A7R III, one being a Large Sensor Compact and the latter is a Pro Mirrorless by rivals Sigma and Sony. There exists a sizeable gap between the resolutions of the DP3 Merrill (15MP) and A7R III (42MP) and the DP3 Merrill (APS-C) and A7R III (Full frame) feature totally different sensor size.

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The DP3 Merrill was announced 5 years earlier than the A7R III and that is quite a large gap as far as technology is concerned. The two cameras offer different body type with the Sigma DP3 Merrill being a Large Sensor Compact camera and the Sony A7R III being a SLR-style mirrorless camera.

Before we go in to a detailed comparison, below is a simple view of how the DP3 Merrill grades versus the A7R III with respect to portability, imaging, features and an overall grade.

This is a preview of the gallery images for Sigma DP3 Merrill and Sony Alpha A7R III. The whole galleries are available at Sigma DP3 Merrill Gallery and Sony A7R III Gallery.

When you are aiming to lug around your camera frequently, you will need to consider its weight and proportions. The Sigma DP3 Merrill provides outer dimensions of 122mm x 67mm x 59mm (4.8" x 2.6" x 2.3") accompanied by a weight of 330 grams (0.73 lbs) and the Sony A7R III has measurements of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") accompanied by a weight of 657 grams (1.45 lbs).

Check the Sigma DP3 Merrill vs Sony A7R III in the all new Camera with Lens Size Comparison Tool.

Remember, the weight of an Interchangeable Lens Camera will vary depending on the lens you are utilising at that time. Here is the front view overall size comparison of the DP3 Merrill vs the A7R III.

Looking at dimensions and weight, the portability grade of the DP3 Merrill and A7R III is 83 and 63 respectively.

Sometimes, it is very hard to envision the contrast between sensor measurements just by reading through a spec sheet. The graphic underneath will help offer you a stronger sense of the sensor dimensions in the DP3 Merrill and A7R III.

Clearly, both the cameras offer different megapixel count and different sensor measurements. The DP3 Merrill using its tinier sensor will make shooting shallower DOF trickier and the Sony A7R III will give extra detail with its extra 27MP. Higher resolution will also allow you to crop pictures a little more aggressively. The older DP3 Merrill is going to be disadvantaged when it comes to sensor innovation.