Olympus E-1 vs Pentax K-S1

Following is a extensive review of the Olympus E-1 versus Pentax K-S1, former is a Pro DSLR while the other is a Advanced DSLR by rivals Olympus and Pentax. There exists a large gap between the resolutions of the E-1 (5MP) and K-S1 (20MP) and the E-1 (Four Thirds) and K-S1 (APS-C) come with different sensor sizes.

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The E-1 was released 11 years prior to the K-S1 which is quite a serious difference as far as technology is concerned. Both of these cameras offer different body type with the Olympus E-1 being a Large SLR camera and the Pentax K-S1 being a Mid-size SLR camera.

Before going straight into a in-depth comparison, below is a concise view of how the E-1 scores versus the K-S1 with regards to portability, imaging, features and an overall score.

This is a sample of the gallery pictures for Olympus E-1 & Pentax K-S1. The complete galleries are viewable at Olympus E-1 Gallery & Pentax K-S1 Gallery.

If you're looking to carry around your camera regularly, you will want to consider its weight and measurements. The Olympus E-1 enjoys outside measurements of 141mm x 104mm x 81mm (5.6" x 4.1" x 3.2") along with a weight of 735 grams (1.62 lbs) and the Pentax K-S1 has proportions of 121mm x 93mm x 70mm (4.8" x 3.7" x 2.8") along with a weight of 558 grams (1.23 lbs).

Examine the Olympus E-1 versus Pentax K-S1 in our brand new Camera plus Lens Size Comparison Tool.

Keep in mind, the weight of an ILC will change based on the lens you are working with during that time. Underneath is the front view scale comparison of the E-1 vs the K-S1.

Taking into consideration dimensions and weight, the portability grade of the E-1 and K-S1 is 59 and 69 respectively.

Sometimes, it is very tough to visualize the gap between sensor sizes simply by checking specs. The picture here might offer you a better sense of the sensor sizing in the E-1 and K-S1.

All in all, each of these cameras enjoy different megapixel count and different sensor sizes. The E-1 due to its tinier sensor is going to make shooting shallower DOF more difficult and the Pentax K-S1 will give more detail as a result of its extra 15 Megapixels. Greater resolution will also help you crop pics far more aggressively. The more aged E-1 is going to be disadvantaged with regard to sensor tech.