Pentax I-10 vs Sony A390

Its time to look a little more closely at the Pentax I-10 versus Sony A390, one being a Small Sensor Compact and the other is a Entry-Level DSLR by competitors Pentax and Sony. The sensor resolution of the I-10 (12MP) and the A390 (14MP) is very similar but the I-10 (1/2.3") and A390 (APS-C) have different sensor sizes.

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The I-10 was brought out 6 months earlier than the A390 so they are both of a similar generation. Both of these cameras have different body design with the Pentax I-10 being a Compact camera and the Sony A390 being a Compact SLR camera.

Before delving into a full comparison, here is a short introduction of how the I-10 grades against the A390 in terms of portability, imaging, features and an overall grade.

This is a sample of the gallery pics for Pentax Optio I-10 and Sony Alpha DSLR-A390. The entire galleries are viewable at Pentax I-10 Gallery and Sony A390 Gallery.

When you are looking to lug around your camera regularly, you're going to have to think about its weight and proportions. The Pentax I-10 provides external dimensions of 101mm x 65mm x 28mm (4.0" x 2.6" x 1.1") having a weight of 153 grams (0.34 lbs) while the Sony A390 has measurements of 128mm x 97mm x 86mm (5.0" x 3.8" x 3.4") and a weight of 549 grams (1.21 lbs).

Examine the Pentax I-10 versus Sony A390 in the latest Camera with Lens Size Comparison Tool.

Remember that, the weight of an Interchangeable Lens Camera will differ depending on the lens you use at that time. Following is a front view over all size comparison of the I-10 against the A390.

Factoring in size and weight, the portability grade of the I-10 and A390 is 93 and 66 respectively.

Generally, it can be hard to picture the gap between sensor measurements purely by going over specs. The graphic underneath will help give you a clearer sense of the sensor sizes in the I-10 and A390.

As you can plainly see, both the cameras have different megapixels and different sensor measurements. The I-10 due to its tinier sensor is going to make getting shallower depth of field tougher and the Sony A390 will offer more detail having its extra 2 Megapixels. Greater resolution will make it easier to crop pics a bit more aggressively.