Pentax 645Z vs Pentax RS1500

Let's examine more in depth at the Pentax 645Z and Pentax RS1500, one being a Pro DSLR and the other is a Small Sensor Compact and they are both sold by Pentax. There exists a significant gap among the sensor resolutions of the 645Z (51MP) and RS1500 (14MP) and the 645Z (Medium format) and RS1500 (1/2.3") feature different sensor size.

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The 645Z was unveiled 3 years later than the RS1500 and that is a fairly sizable gap as far as camera technology is concerned. The two cameras offer different body type with the Pentax 645Z being a Large SLR camera and the Pentax RS1500 being a Compact camera.

Before diving through a detailed comparison, below is a quick summation of how the 645Z matches up vs the RS1500 when considering portability, imaging, features and an overall rating.

This is a sample of the gallery pictures for Pentax 645Z and Pentax Optio RS1500. The full galleries are viewable at Pentax 645Z Gallery and Pentax RS1500 Gallery.

For anyone who is looking to carry your camera regularly, you should factor its weight and volume. The Pentax 645Z provides physical dimensions of 156mm x 117mm x 123mm (6.1" x 4.6" x 4.8") having a weight of 1550 grams (3.42 lbs) and the Pentax RS1500 has sizing of 114mm x 58mm x 28mm (4.5" x 2.3" x 1.1") accompanied by a weight of 157 grams (0.35 lbs).

Analyze the Pentax 645Z and Pentax RS1500 in the all new Camera and Lens Size Comparison Tool.

Take into consideration, the weight of an Interchangeable Lens Camera will change based on the lens you are working with at that moment. Following is the front view scale comparison of the 645Z versus the RS1500.

Taking into consideration dimensions and weight, the portability score of the 645Z and RS1500 is 49 and 93 respectively.

Typically, it can be tough to imagine the gap in sensor sizing just by researching specifications. The graphic here should offer you a clearer sense of the sensor sizes in the 645Z and RS1500.

Plainly, each of these cameras offer different resolutions and different sensor sizing. The 645Z using its larger sensor is going to make shooting bokeh less difficult and the Pentax 645Z will render greater detail having an extra 37MP. Greater resolution can also make it easier to crop images a little more aggressively. The more modern 645Z provides a benefit with regard to sensor tech.