Olympus E-PM1 vs YI M1

In this write-up, we will be matching up the Olympus E-PM1 versus YI M1, both Entry-Level Mirrorless digital cameras by companies Olympus and YI. There exists a crucial gap between the image resolutions of the E-PM1 (12MP) and M1 (20MP) but they enjoy the same exact sensor size (Four Thirds).

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The E-PM1 was revealed 5 years prior to the M1 and that is quite a serious gap as far as technology is concerned. Both cameras offer the identical body type (Rangefinder-style mirrorless).

Before delving in to a complete comparison, below is a concise synopsis of how the E-PM1 grades vs the M1 when it comes to portability, imaging, features and an overall grade.

Below is a preview of the gallery images for Olympus PEN E-PM1 and YI M1. The full galleries are provided at Olympus E-PM1 Gallery and YI M1 Gallery.

For anyone who is planning to lug around your camera frequently, you'll have to think about its weight and measurements. The Olympus E-PM1 provides physical dimensions of 110mm x 64mm x 34mm (4.3" x 2.5" x 1.3") with a weight of 265 grams (0.58 lbs) and the YI M1 has proportions of 114mm x 64mm x 34mm (4.5" x 2.5" x 1.3") with a weight of 350 grams (0.77 lbs).

Contrast the Olympus E-PM1 versus YI M1 in the latest Camera with Lens Size Comparison Tool.

Remember that, the weight of an Interchangeable Lens Camera will differ dependant on the lens you are using at that moment. Below is the front view measurements comparison of the E-PM1 versus the M1.

Factoring in dimensions and weight, the portability grade of the E-PM1 and M1 is 89 and 87 respectively.

Quite often, it's tough to visualise the difference between sensor measurements simply by reviewing specs. The graphic here might provide you a clearer sense of the sensor dimensions in the E-PM1 and M1.

As you can plainly see, both cameras offer the same exact sensor sizing albeit not the same MP. You should expect the YI M1 to offer you greater detail because of its extra 8 Megapixels. Higher resolution will also allow you to crop photographs a little more aggressively. The older E-PM1 is going to be disadvantaged in sensor technology.