Pentax 645Z vs Pentax E90

Lets look more in depth at the Pentax 645Z and Pentax E90, former being a Pro DSLR while the latter is a Small Sensor Compact and they are both designed by Pentax. There is a considerable difference among the sensor resolutions of the 645Z (51MP) and E90 (10MP) and the 645Z (Medium format) and E90 (1/2.3") boast totally different sensor measurements.

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The 645Z was unveiled 4 years later than the E90 and that is a fairly large difference as far as camera tech is concerned. Both of these cameras feature different body design with the Pentax 645Z being a Large SLR camera and the Pentax E90 being a Compact camera.

Before delving right into a full comparison, here is a simple synopsis of how the 645Z scores vs the E90 for portability, imaging, features and an overall rating.

Below is a preview of the gallery photos for Pentax 645Z & Pentax Optio E90. The full galleries are viewable at Pentax 645Z Gallery & Pentax E90 Gallery.

For anyone who is planning to carry your camera often, you will have to factor in its weight and proportions. The Pentax 645Z provides outside dimensions of 156mm x 117mm x 123mm (6.1" x 4.6" x 4.8") with a weight of 1550 grams (3.42 lbs) while the Pentax E90 has measurements of 102mm x 59mm x 25mm (4.0" x 2.3" x 1.0") accompanied by a weight of 145 grams (0.32 lbs).

Check out the Pentax 645Z and Pentax E90 in our brand new Camera & Lens Size Comparison Tool.

Keep in mind, the weight of an ILC will change dependant on the lens you select at the time. The following is a front view overall size comparison of the 645Z versus the E90.

Considering size and weight, the portability score of the 645Z and E90 is 49 and 94 respectively.

Often, its tough to visualise the gap in sensor sizing purely by going through specs. The photograph below should offer you a far better sense of the sensor dimensions in the 645Z and E90.

All in all, both of the cameras come with different resolutions and different sensor sizing. The 645Z with its bigger sensor will make achieving shallower depth of field simpler and the Pentax 645Z will provide extra detail having an extra 41 Megapixels. Higher resolution can also let you crop shots a good deal more aggressively. The more modern 645Z is going to have an advantage when it comes to sensor tech.