Panasonic G9 vs Sony A57

Lets take a closer look at the Panasonic G9 versus Sony A57, former being a Pro Mirrorless while the latter is a Entry-Level DSLR by rivals Panasonic and Sony. There is a considerable difference among the resolutions of the G9 (20MP) and A57 (16MP) and the G9 (Four Thirds) and A57 (APS-C) posses totally different sensor size.

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The G9 was launched 5 years later than the A57 and that is a fairly large difference as far as camera tech is concerned. Both of these cameras have different body design with the Panasonic G9 being a SLR-style mirrorless camera and the Sony A57 being a Compact SLR camera.

Before delving straight to a full comparison, here is a quick highlight of how the G9 grades versus the A57 with regard to portability, imaging, features and an overall grade.

Following is a preview of the gallery images for Panasonic Lumix DC-G9 & Sony SLT-A57. The complete galleries are provided at Panasonic G9 Gallery & Sony A57 Gallery.

For those who are going to lug around your camera regularly, you should take into account its weight and volume. The Panasonic G9 has got external measurements of 137mm x 97mm x 92mm (5.4" x 3.8" x 3.6") accompanied by a weight of 658 grams (1.45 lbs) whilst the Sony A57 has sizing of 132mm x 98mm x 81mm (5.2" x 3.9" x 3.2") along with a weight of 618 grams (1.36 lbs).

Check the Panasonic G9 versus Sony A57 in our completely new Camera plus Lens Size Comparison Tool.

Remember, the weight of an ILC will change dependant on the lens you have at the time. The following is a front view scale comparison of the G9 vs the A57.

Looking at size and weight, the portability grade of the G9 and A57 is 62 and 64 respectively.

Usually, it's tough to envision the difference in sensor measurements just by seeing specs. The graphic below will help offer you a better sense of the sensor measurements in the G9 and A57.

As you can plainly see, both of those cameras provide different megapixels and different sensor measurements. The G9 featuring a smaller sensor will make shooting shallower depth of field more difficult and the Panasonic G9 will show more detail utilizing its extra 4MP. Higher resolution will also enable you to crop photographs more aggressively. The more recent G9 will have an advantage when it comes to sensor tech.