Olympus E-M1 II vs Sony A7R IV

Here is a complete assessment of the Olympus E-M1 II and Sony A7R IV, both Pro Mirrorless cameras by manufacturers Olympus and Sony. There exists a considerable gap among the resolutions of the E-M1 II (20MP) and A7R IV (61MP) and the E-M1 II (Four Thirds) and A7R IV (Full frame) come with different sensor sizes.

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The E-M1 II was introduced 3 years before the A7R IV and that is a fairly large difference as far as camera technology is concerned. Both of the cameras come with the identical body type (SLR-style mirrorless).

Before going straight into a more detailed comparison, below is a concise overview of how the E-M1 II matches up versus the A7R IV in terms of portability, imaging, features and an overall rating.

The following is a preview of the gallery photos for Olympus OM-D E-M1 Mark II & Sony Alpha A7R IV. The whole galleries are available at Olympus E-M1 II Gallery & Sony A7R IV Gallery.

If you're intending to carry your camera often, you need to factor in its weight and size. The Olympus E-M1 II provides exterior dimensions of 134mm x 91mm x 67mm (5.3" x 3.6" x 2.6") along with a weight of 574 grams (1.27 lbs) and the Sony A7R IV has specifications of 129mm x 96mm x 78mm (5.1" x 3.8" x 3.1") and a weight of 665 grams (1.47 lbs).

Compare the Olympus E-M1 II and Sony A7R IV in our newest Camera & Lens Size Comparison Tool.

Remember, the weight of an ILC will vary dependant on the lens you are utilising during that time. Here is the front view physical size comparison of the E-M1 II against the A7R IV.

Using dimensions and weight, the portability grade of the E-M1 II and A7R IV is 68 and 62 respectively.

Typically, it's difficult to picture the difference in sensor sizing only by seeing specifications. The visual below should offer you a much better sense of the sensor sizes in the E-M1 II and A7R IV.

Plainly, both of the cameras posses different megapixel count and different sensor sizing. The E-M1 II having a smaller sensor is going to make getting shallower depth of field harder and the Sony A7R IV will show greater detail using its extra 41MP. Higher resolution can also make it easier to crop pictures somewhat more aggressively. The older E-M1 II will be disadvantaged when it comes to sensor tech.