Ricoh GR Digital III vs Sigma SD9

In this article, we are comparing the Ricoh GR Digital III and Sigma SD9, one being a Small Sensor Compact and the other is a Advanced DSLR by brands Ricoh and Sigma. There is a huge difference among the resolutions of the GR Digital III (10MP) and SD9 (3MP) and the GR Digital III (1/1.7") and SD9 (APS-C) come with different sensor sizes.

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The GR Digital III was unveiled 6 years later than the SD9 and that is a fairly significant gap as far as camera tech is concerned. Each of the cameras offer different body type with the Ricoh GR Digital III being a Compact camera and the Sigma SD9 being a Mid-size SLR camera.

Before delving in to a more detailed comparison, below is a short introduction of how the GR Digital III grades against the SD9 with regard to portability, imaging, features and an overall rating.

Below is a sample of the gallery pics for Ricoh GR Digital III and Sigma SD9. The full galleries are provided at Ricoh GR Digital III Gallery and Sigma SD9 Gallery.

If you're going to carry your camera regularly, you will want to factor in its weight and measurements. The Ricoh GR Digital III offers physical measurements of 109mm x 59mm x 26mm (4.3" x 2.3" x 1.0") accompanied by a weight of 208 grams (0.46 lbs) and the Sigma SD9 has proportions of 152mm x 120mm x 79mm (6.0" x 4.7" x 3.1") along with a weight of 950 grams (2.09 lbs).

Check out the Ricoh GR Digital III and Sigma SD9 in the new Camera and Lens Size Comparison Tool.

Keep in mind, the weight of an Interchangeable Lens Camera will change dependant on the lens you choose at the time. The following is the front view sizing comparison of the GR Digital III versus the SD9.

Taking into account size and weight, the portability grade of the GR Digital III and SD9 is 92 and 54 respectively.

In many cases, it can be tough to visualize the gap in sensor sizing merely by researching a spec sheet. The photograph underneath will provide you a more clear sense of the sensor measurements in the GR Digital III and SD9.

Clearly, the two cameras enjoy different resolutions and different sensor sizing. The GR Digital III using its smaller sensor is going to make shooting shallow DOF trickier and the Ricoh GR Digital III will result in more detail having an extra 7 Megapixels. Greater resolution will also help you crop photos far more aggressively. The younger GR Digital III should have a benefit when it comes to sensor innovation.