Sony RX100 vs Sony A55

Here is a comprehensive analysis of the Sony RX100 versus Sony A55, former being a Large Sensor Compact while the other is a Entry-Level DSLR and both are created by Sony. There is a substantial difference among the resolutions of the RX100 (20MP) and A55 (16MP) and the RX100 (1") and A55 (APS-C) provide different sensor size.

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The RX100 was manufactured 2 years later than the A55 and that is a fairly big difference as far as camera tech is concerned. Both cameras have different body design with the Sony RX100 being a Large Sensor Compact camera and the Sony A55 being a Compact SLR camera.

Before delving right into a thorough comparison, here is a simple summation of how the RX100 grades against the A55 with respect to portability, imaging, features and an overall rating.

This is a sample of the gallery pictures for Sony Cyber-shot DSC-RX100 & Sony SLT-A55. The entire galleries are available at Sony RX100 Gallery & Sony A55 Gallery.

For anybody who is going to carry your camera often, you should factor in its weight and measurements. The Sony RX100 provides outside dimensions of 102mm x 58mm x 36mm (4.0" x 2.3" x 1.4") and a weight of 240 grams (0.53 lbs) whilst the Sony A55 has proportions of 124mm x 92mm x 85mm (4.9" x 3.6" x 3.3") accompanied by a weight of 500 grams (1.10 lbs).

Take a look at the Sony RX100 versus Sony A55 in our newest Camera plus Lens Size Comparison Tool.

Remember that, the weight of an ILC will vary dependant on the lens you select during that time. Below is a front view overall size comparison of the RX100 vs the A55.

Using size and weight, the portability rating of the RX100 and A55 is 91 and 67 respectively.

Often, its tough to visualize the difference in sensor sizing purely by looking through specs. The visual here will provide you a much better sense of the sensor dimensions in the RX100 and A55.

As you can plainly see, the two cameras have different resolutions and different sensor sizing. The RX100 featuring a smaller sensor is going to make getting shallower depth of field more challenging and the Sony RX100 will result in more detail due to its extra 4 Megapixels. Greater resolution will also let you crop images a bit more aggressively. The fresher RX100 provides an edge with regard to sensor technology.