Olympus TG-4 vs Pentax K-3

On this page, we are contrasting the Olympus TG-4 and Pentax K-3, one is a Waterproof and the other is a Advanced DSLR by rivals Olympus and Pentax. There is a sizeable difference among the resolutions of the TG-4 (16MP) and K-3 (24MP) and the TG-4 (1/2.3") and K-3 (APS-C) have totally different sensor measurements.

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The TG-4 was introduced 13 months after the K-3 making them a generation away from each other. Both cameras have different body design with the Olympus TG-4 being a Compact camera and the Pentax K-3 being a Mid-size SLR camera.

Before diving into a comprehensive comparison, here is a brief introduction of how the TG-4 grades vs the K-3 in the way of portability, imaging, features and an overall mark.

This is a sample of the gallery pictures for Olympus Tough TG-4 and Pentax K-3. The whole galleries are available at Olympus TG-4 Gallery and Pentax K-3 Gallery.

If you're looking to travel with your camera, you have to factor its weight and proportions. The Olympus TG-4 provides external measurements of 112mm x 66mm x 31mm (4.4" x 2.6" x 1.2") along with a weight of 247 grams (0.54 lbs) whilst the Pentax K-3 has measurements of 131mm x 100mm x 77mm (5.2" x 3.9" x 3.0") along with a weight of 800 grams (1.76 lbs).

Check the Olympus TG-4 and Pentax K-3 in the latest Camera and Lens Size Comparison Tool.

Remember, the weight of an Interchangeable Lens Camera will vary dependant on the lens you are using at the time. Following is a front view overall size comparison of the TG-4 compared to the K-3.

Looking at size and weight, the portability score of the TG-4 and K-3 is 90 and 59 respectively.

Usually, it can be difficult to visualise the gap in sensor dimensions just by researching a spec sheet. The pic below should offer you a more clear sense of the sensor sizing in the TG-4 and K-3.

As you can see, the two cameras have different megapixel count and different sensor dimensions. The TG-4 with its smaller sensor will make shooting shallower DOF trickier and the Pentax K-3 will result in greater detail using its extra 8MP. Greater resolution will also let you crop photos a bit more aggressively. The fresher TG-4 is going to have a benefit with regard to sensor tech.