Olympus TG-870 vs Pentax 645D

On this page, we will be looking at the Olympus TG-870 versus Pentax 645D, former being a Ultracompact while the latter is a Pro DSLR by brands Olympus and Pentax. There exists a large gap among the resolutions of the TG-870 (16MP) and 645D (40MP) and the TG-870 (1/2.3") and 645D (Medium format) provide totally different sensor measurements.

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The TG-870 was manufactured 5 years later than the 645D and that is a fairly serious difference as far as camera technology is concerned. Each of these cameras have different body design with the Olympus TG-870 being a Ultracompact camera and the Pentax 645D being a Large SLR camera.

Before delving right into a step-by-step comparison, here is a concise summary of how the TG-870 grades against the 645D for portability, imaging, features and an overall grade.

This is a preview of the gallery images for Olympus Stylus Tough TG-870 & Pentax 645D. The entire galleries are available at Olympus TG-870 Gallery & Pentax 645D Gallery.

If you're aiming to lug around your camera, you need to factor in its weight and proportions. The Olympus TG-870 features outer dimensions of 113mm x 64mm x 28mm (4.4" x 2.5" x 1.1") accompanied by a weight of 221 grams (0.49 lbs) and the Pentax 645D has measurements of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") along with a weight of 1480 grams (3.26 lbs).

Contrast the Olympus TG-870 versus Pentax 645D in our newest Camera & Lens Size Comparison Tool.

Take into consideration, the weight of an ILC will vary dependant on the lens you are utilising at that moment. Here is a front view over all size comparison of the TG-870 versus the 645D.

Considering dimensions and weight, the portability grade of the TG-870 and 645D is 91 and 50 respectively.

Quite often, it is hard to visualise the contrast in sensor measurements just by researching specifications. The visual here will offer you a much better sense of the sensor sizes in the TG-870 and 645D.

To sum up, the two cameras have different resolutions and different sensor measurements. The TG-870 featuring a smaller sensor will make achieving shallow DOF more challenging and the Pentax 645D will result in greater detail due to its extra 24MP. Higher resolution will make it easier to crop photographs a bit more aggressively. The more modern TG-870 will have an advantage with regard to sensor tech.