Pentax X70 vs Sigma SD1

Here, we will be evaluating the Pentax X70 and Sigma SD1, one being a Small Sensor Superzoom and the latter is a Advanced DSLR by manufacturers Pentax and Sigma. The sensor resolution of the X70 (12MP) and the SD1 (15MP) is relatively comparable but the X70 (1/2.3") and SD1 (APS-C) provide different sensor sizes.

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The X70 was released 18 months prior to the SD1 which makes them a generation apart from each other. Both cameras feature different body design with the Pentax X70 being a SLR-like (bridge) camera and the Sigma SD1 being a Mid-size SLR camera.

Before going into a complete comparison, here is a simple introduction of how the X70 matches up versus the SD1 with regards to portability, imaging, features and an overall rating.

The following is a preview of the gallery photos for Pentax X70 and Sigma SD1. The complete galleries are available at Pentax X70 Gallery and Sigma SD1 Gallery.

If you're going to carry your camera, you have to consider its weight and proportions. The Pentax X70 offers outside dimensions of 110mm x 83mm x 90mm (4.3" x 3.3" x 3.5") accompanied by a weight of 410 grams (0.90 lbs) and the Sigma SD1 has measurements of 146mm x 113mm x 80mm (5.7" x 4.4" x 3.1") with a weight of n/a grams (0.00 lbs).

Look at the Pentax X70 and Sigma SD1 in the latest Camera and Lens Size Comparison Tool.

Don't forget, the weight of an Interchangeable Lens Camera will vary based on the lens you have chosen at that time. Underneath is a front view physical size comparison of the X70 against the SD1.

Looking at size and weight, the portability score of the X70 and SD1 is 71 and 77 respectively.

Generally, it is tough to picture the contrast in sensor sizing merely by seeing specifications. The graphic below might provide you a much better sense of the sensor sizes in the X70 and SD1.

Plainly, both cameras feature different megapixel count and different sensor sizing. The X70 due to its smaller sensor is going to make achieving shallower DOF tougher and the Sigma SD1 will produce extra detail as a result of its extra 3MP. Higher resolution can also make it easier to crop shots way more aggressively. The older X70 will be disadvantaged when it comes to sensor innovation.