Sony A100 vs Sony RX100 IV

Here, we will be analyzing the Sony A100 vs Sony RX100 IV, one being a Entry-Level DSLR and the latter is a Large Sensor Compact and both of them are sold by Sony. There is a huge difference between the resolutions of the A100 (10MP) and RX100 IV (20MP) and the A100 (APS-C) and RX100 IV (1") offer totally different sensor sizing.

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The A100 was brought out 9 years before the RX100 IV and that is quite a significant gap as far as tech is concerned. The two cameras feature different body design with the Sony A100 being a Compact SLR camera and the Sony RX100 IV being a Large Sensor Compact camera.

Before going into a complete comparison, here is a quick summation of how the A100 matches up versus the RX100 IV in the way of portability, imaging, features and an overall rating.

Following is a preview of the gallery images for Sony Alpha DSLR-A100 and Sony Cyber-shot DSC-RX100 IV. The entire galleries are viewable at Sony A100 Gallery and Sony RX100 IV Gallery.

When you are going to carry your camera often, you'll have to factor its weight and proportions. The Sony A100 features external measurements of 133mm x 95mm x 71mm (5.2" x 3.7" x 2.8") along with a weight of 638 grams (1.41 lbs) whilst the Sony RX100 IV has measurements of 102mm x 58mm x 41mm (4.0" x 2.3" x 1.6") accompanied by a weight of 298 grams (0.66 lbs).

Take a look at the Sony A100 vs Sony RX100 IV in the latest Camera and Lens Size Comparison Tool.

Bear in mind, the weight of an Interchangeable Lens Camera will vary depending on the lens you select at that moment. Below is a front view physical size comparison of the A100 and the RX100 IV.

Taking into consideration size and weight, the portability rating of the A100 and RX100 IV is 64 and 89 respectively.

Generally, it's hard to visualise the gap between sensor sizing purely by looking at technical specs. The photograph underneath may give you a better sense of the sensor measurements in the A100 and RX100 IV.

As you have seen, both of those cameras come with different resolutions and different sensor sizing. The A100 due to its bigger sensor will make achieving shallower depth of field simpler and the Sony RX100 IV will resolve extra detail having its extra 10 Megapixels. Higher resolution will allow you to crop pictures a good deal more aggressively. The older A100 is going to be disadvantaged with regard to sensor innovation.