Pentax K-7 vs Sony TX20

Below, we are comparing the Pentax K-7 and Sony TX20, one is a Advanced DSLR and the other is a Ultracompact by rivals Pentax and Sony. The sensor resolution of the K-7 (15MP) and the TX20 (16MP) is very close but the K-7 (APS-C) and TX20 (1/2.3") feature different sensor measurements.

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The K-7 was revealed 3 years before the TX20 which is a fairly significant gap as far as camera technology is concerned. Both cameras come with different body type with the Pentax K-7 being a Mid-size SLR camera and the Sony TX20 being a Ultracompact camera.

Before diving in to a thorough comparison, below is a brief synopsis of how the K-7 grades against the TX20 with regards to portability, imaging, features and an overall mark.

Here is a sample of the gallery pics for Pentax K-7 and Sony Cyber-shot DSC-TX20. The full galleries are viewable at Pentax K-7 Gallery and Sony TX20 Gallery.

When you are looking to travel with your camera frequently, you'll need to consider its weight and size. The Pentax K-7 features outer dimensions of 131mm x 97mm x 73mm (5.2" x 3.8" x 2.9") having a weight of 750 grams (1.65 lbs) whilst the Sony TX20 has specifications of 96mm x 56mm x 18mm (3.8" x 2.2" x 0.7") having a weight of 133 grams (0.29 lbs).

Check the Pentax K-7 and Sony TX20 in the all new Camera with Lens Size Comparison Tool.

Always remember, the weight of an Interchangeable Lens Camera will change depending on the lens you are working with during that time. Underneath is the front view scale comparison of the K-7 against the TX20.

Taking into account dimensions and weight, the portability rating of the K-7 and TX20 is 60 and 96 respectively.

More often than not, it is very tough to picture the contrast in sensor dimensions only by looking through specifications. The image underneath may offer you a much better sense of the sensor sizes in the K-7 and TX20.

To sum up, each of the cameras have got different resolutions and different sensor dimensions. The K-7 using its larger sensor is going to make shooting bokeh easier and the Sony TX20 will provide you with extra detail because of its extra 1MP. Greater resolution will help you crop pics much more aggressively. The more aged K-7 will be disadvantaged with regard to sensor innovation.