Sony A7R IV vs Sony a1

Here, we will be looking at the Sony A7R IV vs Sony a1, both Pro Mirrorless digital cameras and both of them are offered by Sony. There exists a sizeable gap between the sensor resolutions of the A7R IV (61MP) and a1 (50MP) but both cameras offer the identical sensor size (Full frame).

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The A7R IV was launched 18 months prior to the a1 which makes them a generation apart from one another. Both cameras feature the same body design (SLR-style mirrorless).

Before delving straight to a comprehensive comparison, here is a short highlight of how the A7R IV grades versus the a1 for portability, imaging, features and an overall rating.

Below is a preview of the gallery images for Sony Alpha A7R IV and Sony Alpha a1. The complete galleries are viewable at Sony A7R IV Gallery and Sony a1 Gallery.

When you are planning to carry your camera regularly, you should factor its weight and size. The Sony A7R IV offers physical measurements of 129mm x 96mm x 78mm (5.1" x 3.8" x 3.1") and a weight of 665 grams (1.47 lbs) whilst the Sony a1 has specifications 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 Sony A7R IV vs Sony a1 in the all new Camera with Lens Size Comparison Tool.

Don't forget, the weight of an Interchangeable Lens Camera will vary based on the lens you have chosen at the time. The following is a front view sizing comparison of the A7R IV and the a1.

Taking into consideration dimensions and weight, the portability grade of the A7R IV and a1 is 62 and 61 respectively.

More often than not, it can be hard to see the contrast between sensor sizing only by reading specs. The graphic here will help provide you a clearer sense of the sensor sizing in the A7R IV and a1.

All in all, both of these cameras come with the identical sensor size albeit not the same megapixels. You should expect the Sony A7R IV to deliver more detail utilizing its extra 11 Megapixels. Higher resolution can also make it easier to crop shots a good deal more aggressively. The older A7R IV is going to be disadvantaged when it comes to sensor tech.