Olympus TG-4 vs Pentax K20D

The following is a in-depth analysis of the Olympus TG-4 vs Pentax K20D, one is a Waterproof and the latter is a Advanced DSLR by rivals Olympus and Pentax. The sensor resolution of the TG-4 (16MP) and the K20D (15MP) is pretty well matched but the TG-4 (1/2.3") and K20D (APS-C) have totally different sensor sizes.

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The TG-4 was launched 6 years after the K20D which is quite a sizable gap as far as tech is concerned. Both of these cameras feature different body design with the Olympus TG-4 being a Compact camera and the Pentax K20D being a Mid-size SLR camera.

Before we go right into a in depth comparison, here is a quick overview of how the TG-4 matches up against the K20D in regards to portability, imaging, features and an overall mark.

Following is a preview of the gallery images for Olympus Tough TG-4 and Pentax K20D. The complete galleries are available at Olympus TG-4 Gallery and Pentax K20D Gallery.

In case you're aiming to travel with your camera regularly, you need to consider its weight and volume. The Olympus TG-4 offers outer measurements of 112mm x 66mm x 31mm (4.4" x 2.6" x 1.2") having a weight of 247 grams (0.54 lbs) while the Pentax K20D has sizing of 142mm x 101mm x 70mm (5.6" x 4.0" x 2.8") and a weight of 800 grams (1.76 lbs).

Analyze the Olympus TG-4 vs Pentax K20D in the new Camera with Lens Size Comparison Tool.

Bear in mind, the weight of an Interchangeable Lens Camera will vary depending on the lens you are using at that time. The following is a front view physical size comparison of the TG-4 against the K20D.

Looking at size and weight, the portability score of the TG-4 and K20D is 90 and 59 respectively.

In many cases, it's tough to visualise the contrast between sensor dimensions only by looking at specs. The picture below should provide you a far better sense of the sensor sizing in the TG-4 and K20D.

All in all, both of these cameras feature different megapixel count and different sensor dimensions. The TG-4 because of its tinier sensor will make shooting bokeh harder and the Olympus TG-4 will give more detail utilizing its extra 1 Megapixels. Higher resolution can also help you crop shots way more aggressively. The more modern TG-4 is going to have an advantage with regard to sensor innovation.