Olympus E-M1 vs Sony A7 IV

Below, we are matching up the Olympus E-M1 versus Sony A7 IV, both Pro Mirrorless cameras by brands Olympus and Sony. There exists a noticeable gap among the resolutions of the E-M1 (16MP) and A7 IV (33MP) and the E-M1 (Four Thirds) and A7 IV (Full frame) possess totally different sensor size.

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The E-M1 was unveiled 9 years prior to the A7 IV and that is a fairly sizable difference as far as camera technology is concerned. Both cameras come with the identical body type (SLR-style mirrorless).

Before we go through a more detailed comparison, below is a brief synopsis of how the E-M1 scores against the A7 IV with regard to portability, imaging, features and an overall rating.

The following is a sample of the gallery pictures for Olympus OM-D E-M1 & Sony Alpha A7 IV. The full galleries are provided at Olympus E-M1 Gallery & Sony A7 IV Gallery.

For anyone who is planning to carry your camera regularly, you are going to need to think about its weight and dimensions. The Olympus E-M1 has got outer measurements of 130mm x 94mm x 63mm (5.1" x 3.7" x 2.5") having a weight of 497 grams (1.10 lbs) whilst the Sony A7 IV has dimensions of 129mm x 97mm x 81mm (5.1" x 3.8" x 3.2") and a weight of 699 grams (1.54 lbs).

Look at the Olympus E-M1 versus Sony A7 IV in our completely new Camera plus Lens Size Comparison Tool.

Don't forget, the weight of an ILC will differ based on the lens you are working with at that moment. The following is the front view physical size comparison of the E-M1 compared to the A7 IV.

Taking into account dimensions and weight, the portability rating of the E-M1 and A7 IV is 71 and 61 respectively.

More often than not, it can be difficult to see the difference in sensor sizing merely by researching specifications. The photograph underneath will provide you a better sense of the sensor measurements in the E-M1 and A7 IV.

To sum up, the two cameras have got different resolutions and different sensor sizing. The E-M1 using its smaller sensor will make shooting shallower DOF more challenging and the Sony A7 IV will provide you with extra detail having an extra 17MP. Greater resolution will make it easier to crop images much more aggressively. The older E-M1 will be behind in sensor innovation.