Olympus TG-820 iHS vs Pentax K20D

Here, we will be looking at the Olympus TG-820 iHS vs Pentax K20D, former being a Waterproof while the latter is a Advanced DSLR by rivals Olympus and Pentax. The image resolution of the TG-820 iHS (12MP) and the K20D (15MP) is pretty well matched but the TG-820 iHS (1/2.3") and K20D (APS-C) boast totally different sensor sizes.

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The TG-820 iHS was revealed 3 years later than the K20D and that is quite a significant difference as far as technology is concerned. Both of the cameras feature different body design with the Olympus TG-820 iHS being a Compact camera and the Pentax K20D being a Mid-size SLR camera.

Before diving into a more detailed comparison, here is a concise overview of how the TG-820 iHS grades versus the K20D when considering portability, imaging, features and an overall grade.

Following is a preview of the gallery images for Olympus TG-820 iHS & Pentax K20D. The full galleries are viewable at Olympus TG-820 iHS Gallery & Pentax K20D Gallery.

For anyone who is looking to lug around your camera frequently, you will have to think about its weight and proportions. The Olympus TG-820 iHS comes with outside measurements of 101mm x 65mm x 26mm (4.0" x 2.6" x 1.0") along with a weight of 206 grams (0.45 lbs) and the Pentax K20D has measurements of 142mm x 101mm x 70mm (5.6" x 4.0" x 2.8") with a weight of 800 grams (1.76 lbs).

Compare the Olympus TG-820 iHS vs Pentax K20D in our brand new Camera & Lens Size Comparison Tool.

Remember that, the weight of an ILC will differ depending on the lens you have at that moment. Underneath is a front view measurement comparison of the TG-820 iHS and the K20D.

Considering dimensions and weight, the portability score of the TG-820 iHS and K20D is 92 and 59 respectively.

Quite often, it is very difficult to see the difference between sensor measurements simply by checking specifications. The graphic below should offer you a better sense of the sensor sizing in the TG-820 iHS and K20D.

To sum up, the two cameras feature different resolutions and different sensor measurements. The TG-820 iHS having a tinier sensor will make achieving shallower DOF trickier and the Pentax K20D will give extra detail because of its extra 3 Megapixels. Higher resolution will also make it easier to crop shots way more aggressively. The younger TG-820 iHS will have an advantage in sensor innovation.