Olympus E-420 vs Sony TX7

In this write-up, we will be contrasting the Olympus E-420 and Sony TX7, one being a Entry-Level DSLR and the latter is a Ultracompact by brands Olympus and Sony. The sensor resolution of the E-420 (10MP) and the TX7 (10MP) is pretty similar but the E-420 (Four Thirds) and TX7 (1/2.4") enjoy totally different sensor dimensions.

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The E-420 was released 18 months before the TX7 which makes the cameras a generation apart from one another. Each of these cameras offer different body type with the Olympus E-420 being a Compact SLR camera and the Sony TX7 being a Ultracompact camera.

Before getting straight into a in depth comparison, below is a quick view of how the E-420 grades versus the TX7 in relation to portability, imaging, features and an overall grade.

This is a preview of the gallery images for Olympus E-420 and Sony Cyber-shot DSC-TX7. The complete galleries are available at Olympus E-420 Gallery and Sony TX7 Gallery.

In case you're planning to lug around your camera, you'll have to take into account its weight and volume. The Olympus E-420 provides outer dimensions of 130mm x 91mm x 53mm (5.1" x 3.6" x 2.1") with a weight of 426 grams (0.94 lbs) and the Sony TX7 has sizing of 98mm x 60mm x 18mm (3.9" x 2.4" x 0.7") having a weight of 149 grams (0.33 lbs).

See the Olympus E-420 and Sony TX7 in the new Camera and Lens Size Comparison Tool.

Always remember, the weight of an Interchangeable Lens Camera will differ dependant on the lens you select at that time. Underneath is the front view size comparison of the E-420 and the TX7.

Factoring in dimensions and weight, the portability score of the E-420 and TX7 is 77 and 95 respectively.

More often than not, its difficult to visualise the gap between sensor measurements only by reading specifications. The photograph below will help offer you a far better sense of the sensor dimensions in the E-420 and TX7.

To sum up, the two cameras enjoy the same exact megapixel count albeit not the same sensor measurements. The E-420 offers the bigger sensor which will make achieving shallower depth of field less difficult. The older E-420 is going to be disadvantaged with regard to sensor technology.