Pentax E70 vs Sony A7R III

Here, we will be contrasting the Pentax E70 and Sony A7R III, one is a Small Sensor Compact and the latter is a Pro Mirrorless by competitors Pentax and Sony. There exists a significant gap between the image resolutions of the E70 (10MP) and A7R III (42MP) and the E70 (1/2.3") and A7R III (Full frame) have totally different sensor dimensions.

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The E70 was introduced 9 years before the A7R III which is quite a sizable gap as far as technology is concerned. Both cameras feature different body design with the Pentax E70 being a Compact camera and the Sony A7R III being a SLR-style mirrorless camera.

Before delving into a detailed comparison, here is a simple view of how the E70 grades against the A7R III with regards to portability, imaging, features and an overall mark.

Here is a preview of the gallery photos for Pentax Optio E70 and Sony Alpha A7R III. The whole galleries are available at Pentax E70 Gallery and Sony A7R III Gallery.

When you are intending to travel with your camera, you need to factor its weight and proportions. The Pentax E70 has got external dimensions of 94mm x 61mm x 26mm (3.7" x 2.4" x 1.0") along with a weight of 175 grams (0.39 lbs) and the Sony A7R III has measurements of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") and a weight of 657 grams (1.45 lbs).

Look at the Pentax E70 and Sony A7R III in the latest Camera with Lens Size Comparison Tool.

Do not forget, the weight of an Interchangeable Lens Camera will vary based on the lens you have at that time. Below is a front view size comparison of the E70 vs the A7R III.

Considering dimensions and weight, the portability score of the E70 and A7R III is 94 and 63 respectively.

Typically, it is very tough to visualise the contrast between sensor dimensions just by looking at specifications. The pic here might offer you a much better sense of the sensor dimensions in the E70 and A7R III.

To sum up, each of the cameras come with different megapixel count and different sensor dimensions. The E70 having a tinier sensor will make getting shallow depth of field trickier and the Sony A7R III will give more detail using its extra 32 Megapixels. Higher resolution will let you crop photographs a good deal more aggressively. The more aged E70 is going to be behind when it comes to sensor innovation.