Olympus E-P1 vs Panasonic S1R

Here is a extensive comparison of the Olympus E-P1 versus Panasonic S1R, former being a Entry-Level Mirrorless while the other is a Pro Mirrorless by companies Olympus and Panasonic. There is a large difference between the sensor resolutions of the E-P1 (12MP) and S1R (47MP) and the E-P1 (Four Thirds) and S1R (Full frame) come with different sensor measurements.

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The E-P1 was launched 10 years prior to the S1R and that is quite a serious difference as far as tech is concerned. Each of these cameras offer different body type with the Olympus E-P1 being a Rangefinder-style mirrorless camera and the Panasonic S1R being a SLR-style mirrorless camera.

Before delving in to a detailed comparison, below is a short overview of how the E-P1 grades against the S1R with regards to portability, imaging, features and an overall rating.

Here is a sample of the gallery pictures for Olympus PEN E-P1 & Panasonic Lumix DC-S1R. The complete galleries are available at Olympus E-P1 Gallery & Panasonic S1R Gallery.

If you're aiming to carry your camera frequently, you need to factor its weight and size. The Olympus E-P1 has got outside dimensions of 121mm x 70mm x 36mm (4.8" x 2.8" x 1.4") along with a weight of 355 grams (0.78 lbs) whilst the Panasonic S1R has specifications of 149mm x 110mm x 97mm (5.9" x 4.3" x 3.8") along with a weight of 1020 grams (2.25 lbs).

Compare the Olympus E-P1 versus Panasonic S1R in our newest Camera plus Lens Size Comparison Tool.

Don't forget, the weight of an ILC will change dependant on the lens you are employing during that time. Below is the front view sizing comparison of the E-P1 and the S1R.

Taking into account size and weight, the portability rating of the E-P1 and S1R is 86 and 54 respectively.

Usually, it can be hard to picture the difference between sensor sizing purely by reading through specs. The graphic here should give you a better sense of the sensor dimensions in the E-P1 and S1R.

All in all, both of these cameras enjoy different megapixel count and different sensor sizing. The E-P1 because of its tinier sensor is going to make achieving shallow DOF harder and the Panasonic S1R will give you greater detail utilizing its extra 35 Megapixels. Greater resolution will make it easier to crop photos far more aggressively. The older E-P1 is going to be disadvantaged in sensor innovation.