Pentax W90 vs Sony A390

Below is a comprehensive review of the Pentax W90 versus Sony A390, one being a Waterproof and the other is a Entry-Level DSLR by manufacturers Pentax and Sony. The image resolution of the W90 (12MP) and the A390 (14MP) is fairly similar but the W90 (1/2.3") and A390 (APS-C) boast different sensor sizes.

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The W90 was released 5 months before the A390 which means that they are both of a similar generation. Both the cameras have different body design with the Pentax W90 being a Compact camera and the Sony A390 being a Compact SLR camera.

Before delving right into a thorough comparison, here is a short introduction of how the W90 scores against the A390 with respect to portability, imaging, features and an overall grade.

The following is a sample of the gallery pictures for Pentax Optio W90 and Sony Alpha DSLR-A390. The complete galleries are viewable at Pentax W90 Gallery and Sony A390 Gallery.

For anybody who is going to lug around your camera frequently, you have to consider its weight and volume. The Pentax W90 comes with outer dimensions of 108mm x 59mm x 25mm (4.3" x 2.3" x 1.0") and a weight of 164 grams (0.36 lbs) and the Sony A390 has sizing of 128mm x 97mm x 86mm (5.0" x 3.8" x 3.4") having a weight of 549 grams (1.21 lbs).

Check out the Pentax W90 versus Sony A390 in the all new Camera and Lens Size Comparison Tool.

Always remember, the weight of an Interchangeable Lens Camera will vary based on the lens you have chosen at that time. Underneath is a front view dimension comparison of the W90 compared to the A390.

Factoring in dimensions and weight, the portability score of the W90 and A390 is 94 and 66 respectively.

Normally, it is tough to visualize the gap between sensor measurements merely by reviewing technical specs. The graphic here should offer you a far better sense of the sensor sizes in the W90 and A390.

As you can tell, each of the cameras provide different megapixel count and different sensor measurements. The W90 due to its tinier sensor is going to make achieving shallow DOF more difficult and the Sony A390 will offer extra detail as a result of its extra 2 Megapixels. Greater resolution can also allow you to crop photos more aggressively.