Olympus E-P1 vs Pentax 645Z

Below is a detailed analysis of the Olympus E-P1 vs Pentax 645Z, former being a Entry-Level Mirrorless while the other is a Pro DSLR by brands Olympus and Pentax. There is a considerable difference among the resolutions of the E-P1 (12MP) and 645Z (51MP) and the E-P1 (Four Thirds) and 645Z (Medium format) feature different sensor sizing.

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The E-P1 was unveiled 5 years prior to the 645Z and that is a fairly large difference as far as camera tech is concerned. Both of these cameras come with different body type with the Olympus E-P1 being a Rangefinder-style mirrorless camera and the Pentax 645Z being a Large SLR camera.

Before delving straight into a complete comparison, below is a concise synopsis of how the E-P1 matches up vs the 645Z with regards to portability, imaging, features and an overall grade.

Here is a sample of the gallery pictures for Olympus PEN E-P1 & Pentax 645Z. The full galleries are provided at Olympus E-P1 Gallery & Pentax 645Z Gallery.

In case you're going to lug around your camera, you'll have to factor its weight and size. The Olympus E-P1 features physical dimensions of 121mm x 70mm x 36mm (4.8" x 2.8" x 1.4") accompanied by a weight of 355 grams (0.78 lbs) and the Pentax 645Z has specifications of 156mm x 117mm x 123mm (6.1" x 4.6" x 4.8") having a weight of 1550 grams (3.42 lbs).

Look at the Olympus E-P1 vs Pentax 645Z in our completely new Camera plus Lens Size Comparison Tool.

Always remember, the weight of an ILC will vary depending on the lens you have chosen during that time. Following is the front view scale comparison of the E-P1 and the 645Z.

Taking into consideration size and weight, the portability grade of the E-P1 and 645Z is 86 and 49 respectively.

Often, it is very tough to imagine the gap in sensor measurements only by looking through specifications. The photograph underneath may give you a stronger sense of the sensor dimensions in the E-P1 and 645Z.

Plainly, the 2 cameras posses different megapixels and different sensor measurements. The E-P1 using its smaller sensor is going to make achieving shallower depth of field more challenging and the Pentax 645Z will render extra detail having an extra 39MP. Greater resolution will make it easier to crop images somewhat more aggressively. The older E-P1 will be behind when it comes to sensor innovation.