Pentax P70 vs Sony A57

Lets look more in depth at the Pentax P70 and Sony A57, one being a Ultracompact and the latter is a Entry-Level DSLR by manufacturers Pentax and Sony. There is a significant difference among the resolutions of the P70 (12MP) and A57 (16MP) and the P70 (1/2.3") and A57 (APS-C) provide different sensor sizing.

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The P70 was manufactured 4 years earlier than the A57 and that is a fairly sizable gap as far as camera tech is concerned. Each of these cameras feature different body design with the Pentax P70 being a Ultracompact camera and the Sony A57 being a Compact SLR camera.

Before we go straight to a in depth comparison, here is a short summary of how the P70 grades versus the A57 with respect to portability, imaging, features and an overall rating.

The following is a preview of the gallery photos for Pentax Optio P70 and Sony SLT-A57. The entire galleries are viewable at Pentax P70 Gallery and Sony A57 Gallery.

If you are planning to carry your camera frequently, you're going to have to consider its weight and proportions. The Pentax P70 provides outer measurements of 97mm x 54mm x 22mm (3.8" x 2.1" x 0.9") with a weight of 155 grams (0.34 lbs) while the Sony A57 has measurements of 132mm x 98mm x 81mm (5.2" x 3.9" x 3.2") with a weight of 618 grams (1.36 lbs).

Contrast the Pentax P70 and Sony A57 in the new Camera with Lens Size Comparison Tool.

Bear in mind, the weight of an Interchangeable Lens Camera will vary depending on the lens you are utilising at that time. Following is a front view dimensions comparison of the P70 against the A57.

Taking into consideration size and weight, the portability grade of the P70 and A57 is 95 and 64 respectively.

Oftentimes, it is hard to imagine the contrast in sensor sizing merely by looking through specs. The graphic underneath may provide you a much better sense of the sensor sizing in the P70 and A57.

All in all, each of the cameras feature different resolutions and different sensor sizing. The P70 because of its smaller sensor is going to make getting bokeh harder and the Sony A57 will result in extra detail due to its extra 4MP. Higher resolution will also help you crop shots way more aggressively. The older P70 will be disadvantaged with regard to sensor tech.