Pentax K-S1 vs Sony A330

In this write-up, we will be contrasting the Pentax K-S1 vs Sony A330, one is a Advanced DSLR and the latter is a Entry-Level DSLR by rivals Pentax and Sony. There is a huge difference between the sensor resolutions of the K-S1 (20MP) and A330 (10MP) but they come with the same exact sensor sizes (APS-C).

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The K-S1 was revealed 5 years after the A330 which is quite a significant gap as far as tech is concerned. Both the cameras offer different body type with the Pentax K-S1 being a Mid-size SLR camera and the Sony A330 being a Compact SLR camera.

Before diving in to a more detailed comparison, below is a short introduction of how the K-S1 matches up against the A330 when it comes to portability, imaging, features and an overall score.

Here is a preview of the gallery images for Pentax K-S1 and Sony Alpha DSLR-A330. The full galleries are viewable at Pentax K-S1 Gallery and Sony A330 Gallery.

If you are intending to carry around your camera regularly, you are going to need to think about its weight and volume. The Pentax K-S1 features physical dimensions of 121mm x 93mm x 70mm (4.8" x 3.7" x 2.8") along with a weight of 558 grams (1.23 lbs) while the Sony A330 has sizing of 128mm x 97mm x 71mm (5.0" x 3.8" x 2.8") along with a weight of 529 grams (1.17 lbs).

Compare the Pentax K-S1 vs Sony A330 in the all new Camera and Lens Size Comparison Tool.

Remember that, the weight of an Interchangeable Lens Camera will vary dependant on the lens you are employing at the time. Below is the front view physical size comparison of the K-S1 against the A330.

Looking at size and weight, the portability rating of the K-S1 and A330 is 69 and 67 respectively.

Generally, its tough to picture the difference between sensor sizes merely by looking at technical specs. The pic underneath might give you a clearer sense of the sensor sizes in the K-S1 and A330.

As you have seen, both of those cameras offer the same exact sensor sizing albeit different resolution. You should expect the Pentax K-S1 to resolve more detail because of its extra 10MP. Higher resolution can also make it easier to crop pictures a little more aggressively. The more modern K-S1 provides a benefit when it comes to sensor technology.