Pentax S1 vs Sony A6400

Its time to look more closely at the Pentax S1 versus Sony A6400, one is a Small Sensor Compact and the latter is a Advanced Mirrorless by competitors Pentax and Sony. There is a huge difference between the resolutions of the S1 (14MP) and A6400 (24MP) and the S1 (1/2.3") and A6400 (APS-C) have different sensor dimensions.

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The S1 was announced 8 years prior to the A6400 which is quite a significant gap as far as tech is concerned. Both of the cameras have different body design with the Pentax S1 being a Compact camera and the Sony A6400 being a Rangefinder-style mirrorless camera.

Before diving right into a full comparison, here is a quick view of how the S1 grades vs the A6400 in terms of portability, imaging, features and an overall mark.

Here is a preview of the gallery photos for Pentax Optio S1 and Sony Alpha a6400. The whole galleries are provided at Pentax S1 Gallery and Sony A6400 Gallery.

In case you're aiming to travel with your camera, you are going to need to factor its weight and measurements. The Pentax S1 has got physical measurements of 114mm x 58mm x 28mm (4.5" x 2.3" x 1.1") along with a weight of 157 grams (0.35 lbs) whilst the Sony A6400 has proportions of 120mm x 67mm x 50mm (4.7" x 2.6" x 2.0") having a weight of 403 grams (0.89 lbs).

Check the Pentax S1 versus Sony A6400 in the latest Camera with Lens Size Comparison Tool.

Bear in mind, the weight of an Interchangeable Lens Camera will differ dependant on the lens you have chosen at that time. The following is a front view over all size comparison of the S1 versus the A6400.

Taking into consideration size and weight, the portability rating of the S1 and A6400 is 93 and 83 respectively.

In many cases, it's hard to picture the gap between sensor dimensions just by going over a spec sheet. The image underneath might provide you a much better sense of the sensor sizing in the S1 and A6400.

Clearly, the two cameras provide different resolutions and different sensor dimensions. The S1 having a tinier sensor is going to make getting shallow depth of field more challenging and the Sony A6400 will deliver extra detail with its extra 10 Megapixels. Higher resolution will also enable you to crop shots more aggressively. The more aged S1 is going to be disadvantaged with regard to sensor technology.