Olympus TG-3 vs Pentax K20D

The following is a in depth comparison of the Olympus TG-3 versus Pentax K20D, one is a Waterproof and the latter is a Advanced DSLR by manufacturers Olympus and Pentax. The resolution of the TG-3 (16MP) and the K20D (15MP) is relatively similar but the TG-3 (1/2.3") and K20D (APS-C) boast totally different sensor sizes.

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The TG-3 was launched 5 years after the K20D which is quite a large gap as far as tech is concerned. Both of these cameras feature different body design with the Olympus TG-3 being a Compact camera and the Pentax K20D being a Mid-size SLR camera.

Before delving right into a step-by-step comparison, here is a brief overview of how the TG-3 matches up versus the K20D in the way of portability, imaging, features and an overall mark.

Below is a preview of the gallery photos for Olympus Tough TG-3 and Pentax K20D. The complete galleries are available at Olympus TG-3 Gallery and Pentax K20D Gallery.

When you are planning to travel with your camera regularly, you need to consider its weight and proportions. The Olympus TG-3 has outer dimensions of 112mm x 66mm x 31mm (4.4" x 2.6" x 1.2") accompanied by a weight of 247 grams (0.54 lbs) while the Pentax K20D has measurements of 142mm x 101mm x 70mm (5.6" x 4.0" x 2.8") accompanied by a weight of 800 grams (1.76 lbs).

Examine the Olympus TG-3 versus Pentax K20D in the new Camera with Lens Size Comparison Tool.

Keep in mind, the weight of an Interchangeable Lens Camera will differ dependant on the lens you are using at that moment. Following is a front view dimensions comparison of the TG-3 versus the K20D.

Factoring in size and weight, the portability rating of the TG-3 and K20D is 90 and 59 respectively.

Often, its difficult to visualise the gap between sensor dimensions only by reviewing a spec sheet. The picture here should offer you a more clear sense of the sensor dimensions in the TG-3 and K20D.

Clearly, both of the cameras feature different megapixels and different sensor dimensions. The TG-3 because of its tinier sensor will make getting shallower DOF tougher and the Olympus TG-3 will offer more detail utilizing its extra 1MP. Higher resolution can also help you crop photographs way more aggressively. The fresher TG-3 will have an advantage when it comes to sensor innovation.