Pentax 645Z vs Sony T900

Let's look a little more closely at the Pentax 645Z versus Sony T900, former being a Pro DSLR while the other is a Ultracompact by manufacturers Pentax and Sony. There is a substantial difference between the sensor resolutions of the 645Z (51MP) and T900 (12MP) and the 645Z (Medium format) and T900 (1/2.3") enjoy different sensor dimensions.

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The 645Z was announced 5 years later than the T900 and that is quite a big difference as far as tech is concerned. Each of the cameras offer different body type with the Pentax 645Z being a Large SLR camera and the Sony T900 being a Ultracompact camera.

Before going through a more detailed comparison, below is a concise summary of how the 645Z scores vs the T900 for portability, imaging, features and an overall grade.

Here is a sample of the gallery pics for Pentax 645Z & Sony Cyber-shot DSC-T900. The whole galleries are available at Pentax 645Z Gallery & Sony T900 Gallery.

If you are looking to lug around your camera often, you'll have to think about its weight and measurements. The Pentax 645Z has got exterior dimensions of 156mm x 117mm x 123mm (6.1" x 4.6" x 4.8") accompanied by a weight of 1550 grams (3.42 lbs) while the Sony T900 has proportions of 98mm x 58mm x 16mm (3.9" x 2.3" x 0.6") along with a weight of 143 grams (0.32 lbs).

Take a look at the Pentax 645Z versus Sony T900 in our newest Camera & Lens Size Comparison Tool.

Don't forget, the weight of an ILC will change depending on the lens you are using at that moment. Following is the front view over all size comparison of the 645Z and the T900.

Considering size and weight, the portability rating of the 645Z and T900 is 49 and 96 respectively.

In many cases, it is very hard to imagine the contrast between sensor measurements purely by reading specs. The photograph underneath might provide you a stronger sense of the sensor dimensions in the 645Z and T900.

As you can plainly see, both of these cameras offer different megapixels and different sensor measurements. The 645Z having a larger sensor is going to make shooting shallower depth of field less difficult and the Pentax 645Z will offer you more detail with its extra 39MP. Greater resolution will make it easier to crop photos a little more aggressively. The newer 645Z should have an edge in sensor technology.