Pentax K20D vs Pentax RZ18

On this page, we will be contrasting the Pentax K20D vs Pentax RZ18, former being a Advanced DSLR while the latter is a Small Sensor Superzoom and both of them are built by Pentax. The resolution of the K20D (15MP) and the RZ18 (16MP) is relatively similar but the K20D (APS-C) and RZ18 (1/2.3") posses totally different sensor measurements.

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The K20D was brought out 4 years prior to the RZ18 and that is quite a significant difference as far as tech is concerned. Both the cameras have different body design with the Pentax K20D being a Mid-size SLR camera and the Pentax RZ18 being a Compact camera.

Before getting straight to a full comparison, here is a brief synopsis of how the K20D grades vs the RZ18 for portability, imaging, features and an overall rating.

Following is a preview of the gallery photos for Pentax K20D & Pentax Optio RZ18. The entire galleries are available at Pentax K20D Gallery & Pentax RZ18 Gallery.

If you're intending to carry your camera frequently, you're going to have to take into account its weight and proportions. The Pentax K20D features outside measurements of 142mm x 101mm x 70mm (5.6" x 4.0" x 2.8") along with a weight of 800 grams (1.76 lbs) and the Pentax RZ18 has measurements of 97mm x 61mm x 33mm (3.8" x 2.4" x 1.3") and a weight of 178 grams (0.39 lbs).

Compare the Pentax K20D vs Pentax RZ18 in our brand new Camera & Lens Size Comparison Tool.

Take into account, the weight of an ILC will vary depending on the lens you are employing at that moment. Following is a front view measurement comparison of the K20D compared to the RZ18.

Factoring in size and weight, the portability grade of the K20D and RZ18 is 59 and 92 respectively.

Often, it can be tough to envision the contrast between sensor sizing only by going over specs. The visual underneath will offer you a more clear sense of the sensor sizing in the K20D and RZ18.

As you can plainly see, each of these cameras have different megapixel count and different sensor sizing. The K20D because of its bigger sensor will make shooting bokeh less difficult and the Pentax RZ18 will offer you more detail having its extra 1MP. Higher resolution will also allow you to crop photographs a bit more aggressively. The older K20D is going to be disadvantaged with regard to sensor innovation.