OM System OM-1 vs Sony A7S II

Following is a complete assessment of the OM System OM-1 vs Sony A7S II, both Pro Mirrorless cameras by companies Olympus and Sony. There is a large difference among the sensor resolutions of the OM System OM-1 (20MP) and A7S II (12MP) and the OM System OM-1 (Four Thirds) and A7S II (Full frame) offer different sensor sizing.

Photography Glossary

The OM System OM-1 was introduced 6 years after the A7S II which is a fairly serious difference as far as camera tech is concerned. Both the cameras feature the same body design (SLR-style mirrorless).

Before delving straight to a in-depth comparison, here is a quick synopsis of how the OM System OM-1 grades against the A7S II for portability, imaging, features and an overall score.

The following is a preview of the gallery photos for OM System OM-1 & Sony Alpha A7S II. The whole galleries are available at OM System OM-1 Gallery & Sony A7S II Gallery.

When you are looking to carry around your camera often, you will have to factor its weight and size. The OM System OM-1 offers external dimensions of 135mm x 92mm x 73mm (5.3" x 3.6" x 2.9") with a weight of 599 grams (1.32 lbs) while the Sony A7S II has specifications of 127mm x 96mm x 60mm (5.0" x 3.8" x 2.4") accompanied by a weight of 627 grams (1.38 lbs).

Contrast the OM System OM-1 vs Sony A7S II in our brand new Camera & Lens Size Comparison Tool.

Don't forget, the weight of an ILC will vary based on the lens you select at that moment. Here is a front view measurement comparison of the OM System OM-1 versus the A7S II.

Considering size and weight, the portability grade of the OM System OM-1 and A7S II is 65 and 68 respectively.

Oftentimes, its hard to imagine the contrast in sensor sizes merely by checking out technical specs. The picture underneath might offer you a greater sense of the sensor sizes in the OM System OM-1 and A7S II.

As you can tell, both of these cameras come with different megapixel count and different sensor sizes. The OM System OM-1 with its smaller sensor is going to make getting bokeh more difficult and the OM System OM-1 will show greater detail using its extra 8 Megapixels. Higher resolution can also let you crop shots a good deal more aggressively. The more recent OM System OM-1 should have an advantage with regard to sensor innovation.