Olympus E-P1 vs Pentax ist DS2

Following is a complete assessment of the Olympus E-P1 and Pentax ist DS2, one is a Entry-Level Mirrorless and the other is a Advanced DSLR by brands Olympus and Pentax. There is a sizeable difference among the resolutions of the E-P1 (12MP) and ist DS2 (6MP) and the E-P1 (Four Thirds) and ist DS2 (APS-C) possess different sensor size.

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The E-P1 was announced 3 years after the ist DS2 which is a fairly large gap as far as camera tech is concerned. Both of these cameras come with different body type with the Olympus E-P1 being a Rangefinder-style mirrorless camera and the Pentax ist DS2 being a Mid-size SLR camera.

Before going straight into a detailed comparison, below is a quick highlight of how the E-P1 scores versus the ist DS2 in terms of portability, imaging, features and an overall score.

This is a sample of the gallery pictures for Olympus PEN E-P1 and Pentax ist DS2. The whole galleries are provided at Olympus E-P1 Gallery and Pentax ist DS2 Gallery.

If you are aiming to carry around your camera regularly, you're going to have to consider its weight and volume. The Olympus E-P1 enjoys outside measurements of 121mm x 70mm x 36mm (4.8" x 2.8" x 1.4") along with a weight of 355 grams (0.78 lbs) while the Pentax ist DS2 has sizing of 125mm x 93mm x 66mm (4.9" x 3.7" x 2.6") accompanied by a weight of 605 grams (1.33 lbs).

Take a look at the Olympus E-P1 and Pentax ist DS2 in the latest Camera with Lens Size Comparison Tool.

Remember, the weight of an Interchangeable Lens Camera will vary depending on the lens you choose at that time. Following is the front view sizing comparison of the E-P1 versus the ist DS2.

Taking into consideration size and weight, the portability grade of the E-P1 and ist DS2 is 86 and 68 respectively.

Often, it is very tough to imagine the difference in sensor sizes only by researching technical specs. The image here will help provide you a much better sense of the sensor sizing in the E-P1 and ist DS2.

As you have seen, both the cameras have got different megapixels and different sensor sizes. The E-P1 with its smaller sensor is going to make achieving shallow DOF more difficult and the Olympus E-P1 will provide you with greater detail with its extra 6 Megapixels. Greater resolution will help you crop pics much more aggressively. The more recent E-P1 should have a benefit in sensor tech.