Olympus E-M1 II vs Sony A7 IV

In this article, we will be comparing the Olympus E-M1 II versus Sony A7 IV, both Pro Mirrorless cameras by manufacturers Olympus and Sony. There is a huge difference among the image resolutions of the E-M1 II (20MP) and A7 IV (33MP) and the E-M1 II (Four Thirds) and A7 IV (Full frame) feature different sensor dimensions.

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The E-M1 II was announced 6 years earlier than the A7 IV and that is a fairly significant gap as far as camera tech is concerned. Each of these cameras offer the identical body type (SLR-style mirrorless).

Before getting in to a detailed comparison, below is a quick overview of how the E-M1 II matches up against the A7 IV in terms of portability, imaging, features and an overall grade.

Here is a preview of the gallery images for Olympus OM-D E-M1 Mark II and Sony Alpha A7 IV. The whole galleries are available at Olympus E-M1 II Gallery and Sony A7 IV Gallery.

For those who are going to lug around your camera frequently, you're going to have to consider its weight and volume. The Olympus E-M1 II offers outside dimensions of 134mm x 91mm x 67mm (5.3" x 3.6" x 2.6") accompanied by a weight of 574 grams (1.27 lbs) whilst the Sony A7 IV has sizing of 129mm x 97mm x 81mm (5.1" x 3.8" x 3.2") with a weight of 699 grams (1.54 lbs).

Take a look at the Olympus E-M1 II versus Sony A7 IV in the new Camera with Lens Size Comparison Tool.

Always remember, the weight of an Interchangeable Lens Camera will differ depending on the lens you are using at that time. Below is the front view proportions comparison of the E-M1 II and the A7 IV.

Taking into consideration size and weight, the portability grade of the E-M1 II and A7 IV is 68 and 61 respectively.

Often, it's difficult to imagine the difference in sensor measurements purely by going through specs. The photograph below may provide you a far better sense of the sensor dimensions in the E-M1 II and A7 IV.

All in all, both of the cameras offer different resolutions and different sensor measurements. The E-M1 II having a smaller sensor is going to make achieving shallow DOF more difficult and the Sony A7 IV will show more detail with its extra 13MP. Higher resolution will enable you to crop shots a little more aggressively. The older E-M1 II will be disadvantaged in sensor tech.