Pentax RZ18 vs Ricoh GR Digital III

In this write-up, we will be reviewing the Pentax RZ18 and Ricoh GR Digital III, former is a Small Sensor Superzoom while the latter is a Small Sensor Compact by manufacturers Pentax and Ricoh. There is a large difference between the image resolutions of the RZ18 (16MP) and GR Digital III (10MP) and the RZ18 (1/2.3") and GR Digital III (1/1.7") use totally different sensor sizes.

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The RZ18 was announced 2 years after the GR Digital III which is quite a serious difference as far as tech is concerned. Both the cameras offer the identical body type (Compact).

Before diving straight into a in-depth comparison, below is a short summary of how the RZ18 matches up against the GR Digital III when it comes to portability, imaging, features and an overall mark.

The following is a preview of the gallery photos for Pentax Optio RZ18 & Ricoh GR Digital III. The whole galleries are viewable at Pentax RZ18 Gallery & Ricoh GR Digital III Gallery.

When you are planning to travel with your camera, you have to factor its weight and volume. The Pentax RZ18 comes with exterior dimensions of 97mm x 61mm x 33mm (3.8" x 2.4" x 1.3") with a weight of 178 grams (0.39 lbs) and the Ricoh GR Digital III has sizing of 109mm x 59mm x 26mm (4.3" x 2.3" x 1.0") along with a weight of 208 grams (0.46 lbs).

Contrast the Pentax RZ18 and Ricoh GR Digital III in our newest Camera & Lens Size Comparison Tool.

Always remember, the weight of an ILC will vary based on the lens you select at the time. Here is the front view physical size comparison of the RZ18 compared to the GR Digital III.

Taking into consideration size and weight, the portability rating of the RZ18 and GR Digital III is 92 and 92 respectively.

Oftentimes, it's difficult to see the difference between sensor dimensions simply by going over specs. The pic underneath might give you a greater sense of the sensor sizes in the RZ18 and GR Digital III.

All in all, both of these cameras enjoy different megapixels and different sensor dimensions. The RZ18 having a tinier sensor will make shooting shallow DOF tougher and the Pentax RZ18 will offer more detail with its extra 6 Megapixels. Higher resolution will also help you crop shots far more aggressively. The more recent RZ18 is going to have a benefit when it comes to sensor tech.