Olympus 1s vs Pentax 645D

Below is a extended comparison of the Olympus 1s and Pentax 645D, former being a Small Sensor Superzoom while the latter is a Pro DSLR by competitors Olympus and Pentax. There exists a noticeable gap between the resolutions of the 1s (12MP) and 645D (40MP) and the 1s (1/1.7") and 645D (Medium format) possess totally different sensor measurements.

Photography Glossary

The 1s was launched 5 years later than the 645D and that is quite a sizable difference as far as technology is concerned. Each of the cameras come with different body type with the Olympus 1s being a SLR-like (bridge) camera and the Pentax 645D being a Large SLR camera.

Before going in to a in-depth comparison, below is a short view of how the 1s grades vs the 645D with respect to portability, imaging, features and an overall grade.

Below is a preview of the gallery images for Olympus Stylus 1s & Pentax 645D. The complete galleries are viewable at Olympus 1s Gallery & Pentax 645D Gallery.

For those who are intending to lug around your camera regularly, you will need to factor in its weight and volume. The Olympus 1s has exterior measurements of 116mm x 87mm x 57mm (4.6" x 3.4" x 2.2") accompanied by a weight of 402 grams (0.89 lbs) whilst the Pentax 645D has sizing of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") along with a weight of 1480 grams (3.26 lbs).

Check the Olympus 1s and Pentax 645D in our completely new Camera plus Lens Size Comparison Tool.

Don't forget, the weight of an ILC will differ dependant on the lens you are working with during that time. Here is the front view dimension comparison of the 1s against the 645D.

Taking into account dimensions and weight, the portability rating of the 1s and 645D is 79 and 50 respectively.

More often than not, its difficult to envision the contrast between sensor measurements purely by going over specifications. The photograph below should give you a clearer sense of the sensor sizing in the 1s and 645D.

Plainly, both the cameras have got different resolutions and different sensor measurements. The 1s due to its tinier sensor will make getting shallow DOF harder and the Pentax 645D will deliver extra detail utilizing its extra 28MP. Higher resolution will also make it easier to crop shots much more aggressively. The fresher 1s will have a benefit when it comes to sensor tech.