Pentax RZ18 vs Sony A330

Below, we will be analyzing the Pentax RZ18 vs Sony A330, one being a Small Sensor Superzoom and the latter is a Entry-Level DSLR by companies Pentax and Sony. There is a crucial difference among the resolutions of the RZ18 (16MP) and A330 (10MP) and the RZ18 (1/2.3") and A330 (APS-C) enjoy different sensor dimensions.

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The RZ18 was launched 2 years later than the A330 and that is a fairly serious gap as far as camera tech is concerned. Each of the cameras come with different body type with the Pentax RZ18 being a Compact camera and the Sony A330 being a Compact SLR camera.

Before getting straight into a more detailed comparison, below is a quick overview of how the RZ18 scores versus the A330 when considering portability, imaging, features and an overall grade.

Here is a preview of the gallery images for Pentax Optio RZ18 and Sony Alpha DSLR-A330. The complete galleries are provided at Pentax RZ18 Gallery and Sony A330 Gallery.

If you are aiming to lug around your camera regularly, you are going to need to take into account its weight and measurements. The Pentax RZ18 enjoys outside dimensions of 97mm x 61mm x 33mm (3.8" x 2.4" x 1.3") having a weight of 178 grams (0.39 lbs) while the Sony A330 has proportions of 128mm x 97mm x 71mm (5.0" x 3.8" x 2.8") along with a weight of 529 grams (1.17 lbs).

Check out the Pentax RZ18 vs Sony A330 in the all new Camera and Lens Size Comparison Tool.

Don't forget, the weight of an Interchangeable Lens Camera will vary depending on the lens you have at that moment. Underneath is the front view sizing comparison of the RZ18 against the A330.

Taking into account size and weight, the portability score of the RZ18 and A330 is 92 and 67 respectively.

In many cases, it is very difficult to imagine the gap in sensor measurements merely by checking out specs. The graphic here will help offer you a more clear sense of the sensor sizes in the RZ18 and A330.

All in all, both cameras have got different megapixel count and different sensor measurements. The RZ18 due to its smaller sensor is going to make shooting shallow DOF more challenging and the Pentax RZ18 will produce greater detail utilizing its extra 6 Megapixels. Higher resolution can also make it easier to crop photographs much more aggressively. The more modern RZ18 provides an advantage in sensor tech.