Nikon D800 vs Pentax K-3 III

Below is a comprehensive review of the Nikon D800 and Pentax K-3 III, both Advanced DSLR cameras by brands Nikon and Pentax. There is a large difference among the sensor resolutions of the D800 (36MP) and K-3 III (26MP) and the D800 (Full frame) and K-3 III (APS-C) posses different sensor sizes.

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The D800 was announced 9 years earlier than the K-3 III and that is a fairly serious difference as far as camera tech is concerned. Both of the cameras have the same body design (Mid-size SLR).

Before going into a in-depth comparison, here is a short introduction of how the D800 scores vs the K-3 III in terms of portability, imaging, features and an overall grade.

Following is a preview of the gallery photos for Nikon D800 & Pentax K-3 Mark III. The whole galleries are available at Nikon D800 Gallery & Pentax K-3 III Gallery.

For anybody who is looking to lug around your camera frequently, you'll have to factor its weight and dimensions. The Nikon D800 enjoys external measurements of 146mm x 123mm x 82mm (5.7" x 4.8" x 3.2") with a weight of 900 grams (1.98 lbs) and the Pentax K-3 III has dimensions of 135mm x 104mm x 74mm (5.3" x 4.1" x 2.9") with a weight of 820 grams (1.81 lbs).

Examine the Nikon D800 and Pentax K-3 III in our completely new Camera & Lens Size Comparison Tool.

Remember that, the weight of an ILC will vary depending on the lens you are using during that time. Underneath is a front view physical size comparison of the D800 vs the K-3 III.

Factoring in size and weight, the portability score of the D800 and K-3 III is 54 and 58 respectively.

In many cases, its difficult to picture the contrast in sensor measurements merely by seeing technical specs. The visual below might offer you a better sense of the sensor sizing in the D800 and K-3 III.

As you can tell, both of these cameras have different megapixels and different sensor measurements. The D800 using its bigger sensor is going to make shooting bokeh easier and the Nikon D800 will show more detail with its extra 10 Megapixels. Higher resolution will also let you crop pictures a bit more aggressively. The older D800 will be behind in sensor technology.