Olympus E-620 vs Pentax K-S1

Below is a extended review of the Olympus E-620 and Pentax K-S1, former being a Entry-Level DSLR while the latter is a Advanced DSLR by competitors Olympus and Pentax. There exists a noticeable gap between the sensor resolutions of the E-620 (12MP) and K-S1 (20MP) and the E-620 (Four Thirds) and K-S1 (APS-C) provide totally different sensor sizes.

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The E-620 was manufactured 6 years earlier than the K-S1 and that is quite a sizable difference as far as technology is concerned. The two cameras have different body design with the Olympus E-620 being a Compact SLR camera and the Pentax K-S1 being a Mid-size SLR camera.

Before going right into a thorough comparison, here is a quick overview of how the E-620 matches up against the K-S1 in relation to portability, imaging, features and an overall grade.

Following is a preview of the gallery images for Olympus E-620 & Pentax K-S1. The entire galleries are provided at Olympus E-620 Gallery & Pentax K-S1 Gallery.

For anybody who is looking to lug around your camera frequently, you will want to factor its weight and dimensions. The Olympus E-620 enjoys outside dimensions of 130mm x 94mm x 60mm (5.1" x 3.7" x 2.4") with a weight of 500 grams (1.10 lbs) whilst the Pentax K-S1 has dimensions of 121mm x 93mm x 70mm (4.8" x 3.7" x 2.8") accompanied by a weight of 558 grams (1.23 lbs).

Examine the Olympus E-620 and Pentax K-S1 in our completely new Camera & Lens Size Comparison Tool.

Don't forget, the weight of an ILC will vary based on the lens you are utilising at that time. The following is a front view dimension comparison of the E-620 against the K-S1.

Taking into consideration dimensions and weight, the portability rating of the E-620 and K-S1 is 71 and 69 respectively.

Sometimes, it is tough to visualise the contrast between sensor measurements just by reviewing specs. The visual below will help offer you a better sense of the sensor dimensions in the E-620 and K-S1.

All in all, the two cameras have different megapixels and different sensor measurements. The E-620 due to its tinier sensor will make getting shallower DOF trickier and the Pentax K-S1 will deliver greater detail due to its extra 8MP. Higher resolution will enable you to crop photographs a bit more aggressively. The older E-620 is going to be disadvantaged with regard to sensor tech.