Panasonic G1 vs Pentax S1

Here, we are reviewing the Panasonic G1 versus Pentax S1, former being a Entry-Level Mirrorless while the other is a Small Sensor Compact by rivals Panasonic and Pentax. The sensor resolution of the G1 (12MP) and the S1 (14MP) is fairly similar but the G1 (Four Thirds) and S1 (1/2.3") have different sensor measurements.

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The G1 was revealed 3 years prior to the S1 and that is quite a sizable difference as far as technology is concerned. Each of these cameras feature different body design with the Panasonic G1 being a SLR-style mirrorless camera and the Pentax S1 being a Compact camera.

Before going straight to a thorough comparison, here is a short summary of how the G1 matches up vs the S1 in the way of portability, imaging, features and an overall grade.

The following is a sample of the gallery pictures for Panasonic Lumix DMC-G1 & Pentax Optio S1. The full galleries are viewable at Panasonic G1 Gallery & Pentax S1 Gallery.

When you are planning to lug around your camera frequently, you're going to have to take into account its weight and size. The Panasonic G1 offers physical dimensions of 124mm x 84mm x 45mm (4.9" x 3.3" x 1.8") with a weight of 360 grams (0.79 lbs) and the Pentax S1 has specifications of 114mm x 58mm x 28mm (4.5" x 2.3" x 1.1") having a weight of 157 grams (0.35 lbs).

Check out the Panasonic G1 versus Pentax S1 in our completely new Camera & Lens Size Comparison Tool.

Remember, the weight of an ILC will change depending on the lens you have at the time. Underneath is a front view over all size comparison of the G1 against the S1.

Taking into consideration dimensions and weight, the portability rating of the G1 and S1 is 82 and 93 respectively.

Sometimes, its tough to visualize the difference between sensor measurements only by reviewing specifications. The graphic below will help offer you a better sense of the sensor sizes in the G1 and S1.

Plainly, each of the cameras feature different megapixel count and different sensor measurements. The G1 using its larger sensor is going to make shooting shallower depth of field easier and the Pentax S1 will offer extra detail because of its extra 2 Megapixels. Greater resolution will allow you to crop photos way more aggressively. The older G1 is going to be disadvantaged with regard to sensor technology.