OM System OM-1 vs Panasonic S1R

In this article, we are reviewing the OM System OM-1 versus Panasonic S1R, both Pro Mirrorless cameras by brands Olympus and Panasonic. There is a substantial difference among the resolutions of the OM System OM-1 (20MP) and S1R (47MP) and the OM System OM-1 (Four Thirds) and S1R (Full frame) feature totally different sensor size.

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The OM System OM-1 was unveiled 3 years later than the S1R and that is a fairly big difference as far as camera tech is concerned. Both of the cameras offer the identical body type (SLR-style mirrorless).

Before we go through a step-by-step comparison, below is a concise synopsis of how the OM System OM-1 scores vs the S1R with regards to portability, imaging, features and an overall rating.

Following is a sample of the gallery pics for OM System OM-1 & Panasonic Lumix DC-S1R. The full galleries are viewable at OM System OM-1 Gallery & Panasonic S1R Gallery.

For anyone who is looking to carry your camera frequently, you will have to factor in its weight and measurements. The OM System OM-1 offers exterior measurements of 135mm x 92mm x 73mm (5.3" x 3.6" x 2.9") along with a weight of 599 grams (1.32 lbs) whilst the Panasonic S1R has proportions of 149mm x 110mm x 97mm (5.9" x 4.3" x 3.8") along with a weight of 1020 grams (2.25 lbs).

Look at the OM System OM-1 versus Panasonic S1R in our newest Camera & Lens Size Comparison Tool.

Remember that, the weight of an ILC will change depending on the lens you are using at that time. Here is the front view proportions comparison of the OM System OM-1 vs the S1R.

Factoring in size and weight, the portability score of the OM System OM-1 and S1R is 65 and 54 respectively.

In many cases, its tough to envision the contrast in sensor sizing purely by researching a spec sheet. The graphic here may provide you a better sense of the sensor sizing in the OM System OM-1 and S1R.

As you can see, both of those cameras enjoy different megapixels and different sensor sizing. The OM System OM-1 with its smaller sensor will make achieving bokeh harder and the Panasonic S1R will render more detail having an extra 27 Megapixels. Greater resolution can also allow you to crop images far more aggressively. The newer OM System OM-1 will have a benefit when it comes to sensor tech.