Ricoh PX vs Sigma SD9

The following is a extensive assessment of the Ricoh PX and Sigma SD9, former is a Small Sensor Compact while the latter is a Advanced DSLR by competitors Ricoh and Sigma. There is a sizable difference between the image resolutions of the PX (16MP) and SD9 (3MP) and the PX (1/2.3") and SD9 (APS-C) posses different sensor size.

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The PX was unveiled 8 years after the SD9 which is quite a significant difference as far as tech is concerned. Both of these cameras have different body design with the Ricoh PX being a Compact camera and the Sigma SD9 being a Mid-size SLR camera.

Before getting straight to a in-depth comparison, here is a brief introduction of how the PX scores against the SD9 in terms of portability, imaging, features and an overall mark.

Here is a preview of the gallery images for Ricoh PX & Sigma SD9. The full galleries are provided at Ricoh PX Gallery & Sigma SD9 Gallery.

For anyone who is planning to travel with your camera, you need to think about its weight and volume. The Ricoh PX offers exterior measurements of 100mm x 55mm x 21mm (3.9" x 2.2" x 0.8") having a weight of 156 grams (0.34 lbs) whilst the Sigma SD9 has sizing of 152mm x 120mm x 79mm (6.0" x 4.7" x 3.1") and a weight of 950 grams (2.09 lbs).

Analyze the Ricoh PX and Sigma SD9 in our completely new Camera & Lens Size Comparison Tool.

Remember that, the weight of an ILC will vary depending on the lens you have chosen at that time. Here is a front view proportions comparison of the PX versus the SD9.

Taking into account size and weight, the portability score of the PX and SD9 is 95 and 54 respectively.

Oftentimes, it can be hard to imagine the gap between sensor dimensions simply by reviewing a spec sheet. The image below might provide you a better sense of the sensor measurements in the PX and SD9.

As you can see, the 2 cameras provide different resolutions and different sensor dimensions. The PX with its tinier sensor is going to make achieving shallower DOF more challenging and the Ricoh PX will deliver extra detail having an extra 13MP. Higher resolution can also let you crop shots more aggressively. The fresher PX should have an advantage in sensor tech.