Canon G15 vs Pentax 645D

Here is a in-depth analysis of the Canon G15 and Pentax 645D, one being a Small Sensor Compact and the other is a Pro DSLR by rivals Canon and Pentax. There is a big difference between the sensor resolutions of the G15 (12MP) and 645D (40MP) and the G15 (1/1.7") and 645D (Medium format) provide totally different sensor dimensions.

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The G15 was manufactured 2 years later than the 645D and that is quite a big gap as far as tech is concerned. Both of these cameras have different body design with the Canon G15 being a Compact camera and the Pentax 645D being a Large SLR camera.

Before delving straight to a comprehensive comparison, here is a brief summation of how the G15 scores versus the 645D when considering portability, imaging, features and an overall rating.

This is a sample of the gallery pictures for Canon PowerShot G15 and Pentax 645D. The entire galleries are provided at Canon G15 Gallery and Pentax 645D Gallery.

For those who are looking to carry your camera regularly, you'll have to consider its weight and proportions. The Canon G15 has outer measurements of 107mm x 76mm x 40mm (4.2" x 3.0" x 1.6") accompanied by a weight of 352 grams (0.78 lbs) and the Pentax 645D has measurements of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") having a weight of 1480 grams (3.26 lbs).

Compare the Canon G15 and Pentax 645D in the new Camera and Lens Size Comparison Tool.

Remember, the weight of an Interchangeable Lens Camera will differ depending on the lens you are employing at that moment. Underneath is a front view size comparison of the G15 and the 645D.

Taking into consideration size and weight, the portability grade of the G15 and 645D is 86 and 50 respectively.

Usually, it's tough to visualise the contrast between sensor sizing merely by reviewing specs. The graphic here may offer you a stronger sense of the sensor measurements in the G15 and 645D.

As you can plainly see, both of these cameras have different megapixel count and different sensor sizing. The G15 due to its tinier sensor will make getting shallower depth of field tougher and the Pentax 645D will offer extra detail due to its extra 28MP. Greater resolution can also help you crop photos a bit more aggressively. The fresher G15 is going to have an advantage with regard to sensor technology.