Sigma SD15 vs Sony a1

Following is a in depth overview of the Sigma SD15 and Sony a1, former is a Advanced DSLR while the other is a Pro Mirrorless by companies Sigma and Sony. There exists a noticeable gap between the sensor resolutions of the SD15 (5MP) and a1 (50MP) and the SD15 (APS-C) and a1 (Full frame) provide totally different sensor sizing.

Japan-exclusive Leica Leitz Phone 3 features big sensor and new modes

The SD15 was revealed 12 years earlier than the a1 which is quite a sizable difference as far as technology is concerned. Each of the cameras have different body design with the Sigma SD15 being a Mid-size SLR camera and the Sony a1 being a SLR-style mirrorless camera.

Before we go into a thorough comparison, here is a brief introduction of how the SD15 grades vs the a1 with respect to portability, imaging, features and an overall score.

Here is a sample of the gallery pictures for Sigma SD15 & Sony Alpha a1. The full galleries are viewable at Sigma SD15 Gallery & Sony a1 Gallery.

For anybody who is intending to carry around your camera frequently, you will have to factor its weight and proportions. The Sigma SD15 has external dimensions 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 a1 has measurements of 129mm x 97mm x 70mm (5.1" x 3.8" x 2.8") along with a weight of 737 grams (1.62 lbs).

Take a look at the Sigma SD15 and Sony a1 in our newest Camera & Lens Size Comparison Tool.

Remember, the weight of an ILC will differ depending on the lens you use during that time. The following is a front view proportions comparison of the SD15 compared to the a1.

Considering dimensions and weight, the portability rating of the SD15 and a1 is 59 and 61 respectively.

Typically, it is very tough to see the contrast between sensor sizes simply by checking specs. The image underneath might provide you a more clear sense of the sensor dimensions in the SD15 and a1.

All in all, both the cameras provide different resolutions and different sensor sizes. The SD15 having a tinier sensor will make shooting shallower DOF more challenging and the Sony a1 will give you extra detail because of its extra 45MP. Greater resolution will help you crop pics more aggressively. The more aged SD15 is going to be behind with regard to sensor tech.