Sigma SD15 vs Sony A7R II

Below, we are matching up the Sigma SD15 vs Sony A7R II, one being a Advanced DSLR and the other is a Pro Mirrorless by brands Sigma and Sony. There is a big difference between the resolutions of the SD15 (5MP) and A7R II (42MP) and the SD15 (APS-C) and A7R II (Full frame) possess totally different sensor sizing.

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The SD15 was manufactured 6 years earlier than the A7R II and that is quite a big gap as far as tech is concerned. Both the cameras come with different body type with the Sigma SD15 being a Mid-size SLR camera and the Sony A7R II being a SLR-style mirrorless camera.

Before getting straight into a full comparison, below is a quick introduction of how the SD15 grades versus the A7R II with respect to portability, imaging, features and an overall grade.

Here is a sample of the gallery pictures for Sigma SD15 and Sony Alpha A7R II. The entire galleries are viewable at Sigma SD15 Gallery and Sony A7R II Gallery.

For anybody who is looking to lug around your camera frequently, you are going to need to factor in its weight and proportions. The Sigma SD15 provides exterior measurements of 144mm x 107mm x 81mm (5.7" x 4.2" x 3.2") along with a weight of 750 grams (1.65 lbs) whilst the Sony A7R II has measurements of 127mm x 96mm x 60mm (5.0" x 3.8" x 2.4") along with a weight of 625 grams (1.38 lbs).

Look at the Sigma SD15 vs Sony A7R II in the all new Camera with Lens Size Comparison Tool.

Remember that, the weight of an Interchangeable Lens Camera will change depending on the lens you have attached at that time. Here is the front view over all size comparison of the SD15 versus the A7R II.

Using size and weight, the portability rating of the SD15 and A7R II is 59 and 68 respectively.

Usually, it is very difficult to envision the gap between sensor measurements simply by checking specs. The visual below may offer you a greater sense of the sensor sizing in the SD15 and A7R II.

As you can plainly see, both of these cameras posses different resolutions and different sensor measurements. The SD15 featuring a tinier sensor will make getting bokeh tougher and the Sony A7R II will resolve more detail due to its extra 37MP. Greater resolution can also enable you to crop photos somewhat more aggressively. The older SD15 is going to be behind in sensor tech.