Pentax RZ18 vs Sony A7c

On this page, we will be reviewing the Pentax RZ18 vs Sony A7c, one is a Small Sensor Superzoom and the latter is a Advanced Mirrorless by manufacturers Pentax and Sony. There exists a big gap among the sensor resolutions of the RZ18 (16MP) and A7c (24MP) and the RZ18 (1/2.3") and A7c (Full frame) offer totally different sensor sizing.

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The RZ18 was manufactured 10 years prior to the A7c which is a fairly big gap as far as camera technology is concerned. Both of the cameras have different body design with the Pentax RZ18 being a Compact camera and the Sony A7c being a Rangefinder-style mirrorless camera.

Before delving straight to a detailed comparison, here is a quick overview of how the RZ18 scores vs the A7c for portability, imaging, features and an overall score.

This is a preview of the gallery images for Pentax Optio RZ18 and Sony Alpha A7c. The entire galleries are viewable at Pentax RZ18 Gallery and Sony A7c Gallery.

If you are going to carry around your camera regularly, you will have to factor in its weight and proportions. The Pentax RZ18 comes with physical dimensions of 97mm x 61mm x 33mm (3.8" x 2.4" x 1.3") along with a weight of 178 grams (0.39 lbs) and the Sony A7c has measurements of 124mm x 71mm x 60mm (4.9" x 2.8" x 2.4") along with a weight of 509 grams (1.12 lbs).

Take a look at the Pentax RZ18 vs Sony A7c in the all new Camera and Lens Size Comparison Tool.

Take into consideration, the weight of an Interchangeable Lens Camera will vary based on the lens you choose at the time. The following is a front view scale comparison of the RZ18 and the A7c.

Taking into consideration dimensions and weight, the portability score of the RZ18 and A7c is 92 and 78 respectively.

Sometimes, it's tough to visualise the gap in sensor sizes merely by looking through technical specs. The image below will help offer you a clearer sense of the sensor dimensions in the RZ18 and A7c.

As you can tell, the two cameras provide different megapixel count and different sensor sizes. The RZ18 due to its smaller sensor will make getting shallower depth of field tougher and the Sony A7c will render greater detail due to its extra 8 Megapixels. Higher resolution will enable you to crop shots more aggressively. The more aged RZ18 will be disadvantaged with regard to sensor innovation.