Pentax 645Z vs Sigma SD1

Let's look more in depth at the Pentax 645Z vs Sigma SD1, one is a Pro DSLR and the latter is a Advanced DSLR by rivals Pentax and Sigma. There is a big difference among the resolutions of the 645Z (51MP) and SD1 (15MP) and the 645Z (Medium format) and SD1 (APS-C) have different sensor sizes.

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The 645Z was manufactured 3 years after the SD1 which is a fairly big gap as far as camera tech is concerned. Each of these cameras feature different body design with the Pentax 645Z being a Large SLR camera and the Sigma SD1 being a Mid-size SLR camera.

Before getting straight to a more detailed comparison, here is a brief view of how the 645Z scores versus the SD1 with regards to portability, imaging, features and an overall score.

This is a preview of the gallery images for Pentax 645Z and Sigma SD1. The entire galleries are provided at Pentax 645Z Gallery and Sigma SD1 Gallery.

When you are going to carry around your camera frequently, you will need to think about its weight and volume. The Pentax 645Z offers exterior measurements of 156mm x 117mm x 123mm (6.1" x 4.6" x 4.8") having a weight of 1550 grams (3.42 lbs) whilst the Sigma SD1 has sizing of 146mm x 113mm x 80mm (5.7" x 4.4" x 3.1") accompanied by a weight of n/a grams (0.00 lbs).

Look at the Pentax 645Z vs Sigma SD1 in the new Camera and Lens Size Comparison Tool.

Take into account, the weight of an Interchangeable Lens Camera will differ based on the lens you use during that time. Below is a front view over all size comparison of the 645Z against the SD1.

Taking into consideration size and weight, the portability grade of the 645Z and SD1 is 49 and 77 respectively.

Often, it is very tough to imagine the contrast in sensor sizes only by going through specs. The picture underneath will offer you a far better sense of the sensor measurements in the 645Z and SD1.

As you can plainly see, the two cameras come with different resolutions and different sensor sizes. The 645Z featuring a bigger sensor is going to make shooting bokeh easier and the Pentax 645Z will provide more detail due to its extra 36 Megapixels. Higher resolution can also help you crop pictures a good deal more aggressively. The newer 645Z provides an advantage in sensor technology.