Olympus TG-320 vs Pentax 645Z

Its time to take a closer look at the Olympus TG-320 and Pentax 645Z, one being a Waterproof and the other is a Pro DSLR by manufacturers Olympus and Pentax. There exists a significant gap among the sensor resolutions of the TG-320 (14MP) and 645Z (51MP) and the TG-320 (1/2.3") and 645Z (Medium format) offer different sensor dimensions.

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The TG-320 was introduced 3 years before the 645Z and that is a fairly sizable gap as far as camera technology is concerned. Both of these cameras have different body design with the Olympus TG-320 being a Compact camera and the Pentax 645Z being a Large SLR camera.

Before we go straight to a comprehensive comparison, here is a brief synopsis of how the TG-320 matches up versus the 645Z with respect to portability, imaging, features and an overall rating.

Below is a sample of the gallery pics for Olympus TG-320 and Pentax 645Z. The whole galleries are provided at Olympus TG-320 Gallery and Pentax 645Z Gallery.

For those who are looking to carry your camera regularly, you should think about its weight and volume. The Olympus TG-320 enjoys physical measurements of 96mm x 63mm x 23mm (3.8" x 2.5" x 0.9") with a weight of 155 grams (0.34 lbs) whilst the Pentax 645Z has sizing of 156mm x 117mm x 123mm (6.1" x 4.6" x 4.8") with a weight of 1550 grams (3.42 lbs).

Analyze the Olympus TG-320 and Pentax 645Z in the latest Camera with Lens Size Comparison Tool.

Bear in mind, the weight of an Interchangeable Lens Camera will vary dependant on the lens you are using during that time. Following is a front view measurement comparison of the TG-320 compared to the 645Z.

Factoring in dimensions and weight, the portability score of the TG-320 and 645Z is 94 and 49 respectively.

Typically, it's difficult to imagine the contrast in sensor sizing only by going through technical specs. The visual below should offer you a far better sense of the sensor measurements in the TG-320 and 645Z.

As you can tell, both of these cameras have different resolutions and different sensor sizing. The TG-320 with its smaller sensor is going to make getting bokeh more challenging and the Pentax 645Z will produce greater detail using its extra 37 Megapixels. Greater resolution will also help you crop images a bit more aggressively. The older TG-320 will be behind with regard to sensor innovation.