Pentax 645D vs Pentax RS1500

The following is a complete comparison of the Pentax 645D and Pentax RS1500, former is a Pro DSLR while the other is a Small Sensor Compact and both are created by Pentax. There is a substantial difference between the image resolutions of the 645D (40MP) and RS1500 (14MP) and the 645D (Medium format) and RS1500 (1/2.3") posses different sensor sizing.

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The 645D was revealed 12 months prior to the RS1500 and they are of a similar age. Each of the cameras have different body design with the Pentax 645D being a Large SLR camera and the Pentax RS1500 being a Compact camera.

Before going straight to a in depth comparison, here is a simple highlight of how the 645D matches up vs the RS1500 in relation to portability, imaging, features and an overall mark.

This is a sample of the gallery pictures for Pentax 645D & Pentax Optio RS1500. The full galleries are viewable at Pentax 645D Gallery & Pentax RS1500 Gallery.

If you are going to travel with your camera often, you have to think about its weight and proportions. The Pentax 645D provides physical dimensions of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") with a weight of 1480 grams (3.26 lbs) while the Pentax RS1500 has measurements of 114mm x 58mm x 28mm (4.5" x 2.3" x 1.1") having a weight of 157 grams (0.35 lbs).

Take a look at the Pentax 645D and Pentax RS1500 in our completely new Camera plus Lens Size Comparison Tool.

Keep in mind, the weight of an ILC will change depending on the lens you choose during that time. Underneath is a front view sizing comparison of the 645D versus the RS1500.

Considering size and weight, the portability grade of the 645D and RS1500 is 50 and 93 respectively.

Usually, its difficult to picture the contrast between sensor dimensions purely by reading through a spec sheet. The pic underneath should provide you a greater sense of the sensor dimensions in the 645D and RS1500.

As you can see, each of these cameras have different megapixels and different sensor dimensions. The 645D using its larger sensor is going to make getting shallow DOF simpler and the Pentax 645D will give you greater detail because of its extra 26 Megapixels. Greater resolution will make it easier to crop pics a bit more aggressively. The more aged 645D is going to be behind in sensor technology.