Pentax W90 vs Sony A55

Its time to look more closely at the Pentax W90 vs Sony A55, former is a Waterproof while the other is a Entry-Level DSLR by rivals Pentax and Sony. There is a large difference between the sensor resolutions of the W90 (12MP) and A55 (16MP) and the W90 (1/2.3") and A55 (APS-C) enjoy different sensor sizing.

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The W90 was manufactured 6 months earlier than the A55 so they are of a similar age. Both cameras offer different body type with the Pentax W90 being a Compact camera and the Sony A55 being a Compact SLR camera.

Before getting through a comprehensive comparison, below is a concise synopsis of how the W90 grades vs the A55 in terms of portability, imaging, features and an overall mark.

This is a sample of the gallery pictures for Pentax Optio W90 & Sony SLT-A55. The entire galleries are viewable at Pentax W90 Gallery & Sony A55 Gallery.

When you are aiming to travel with your camera regularly, you'll need to factor its weight and size. The Pentax W90 has got outer measurements of 108mm x 59mm x 25mm (4.3" x 2.3" x 1.0") having a weight of 164 grams (0.36 lbs) and the Sony A55 has specifications of 124mm x 92mm x 85mm (4.9" x 3.6" x 3.3") with a weight of 500 grams (1.10 lbs).

Compare the Pentax W90 vs Sony A55 in our brand new Camera plus Lens Size Comparison Tool.

Always remember, the weight of an ILC will differ depending on the lens you have chosen during that time. Following is the front view proportions comparison of the W90 and the A55.

Looking at size and weight, the portability score of the W90 and A55 is 94 and 67 respectively.

Generally, it is difficult to picture the difference between sensor dimensions simply by reading through technical specs. The picture here will help offer you a clearer sense of the sensor measurements in the W90 and A55.

As you have seen, both of those cameras offer different megapixels and different sensor dimensions. The W90 because of its tinier sensor is going to make shooting shallow depth of field more challenging and the Sony A55 will give greater detail due to its extra 4MP. Greater resolution can also enable you to crop photos a little more aggressively.