If you are looking for a new DSLR camera in this category – entry-level, but versatile – the Sony has some keen competition, and Nikon’s D5200 and Canon’s EOS 650D are probably the closest. Looking at the data it is clear that the best performance comes from the Nikon D5200. Its DxO Mark score of 84 is exceptional, placing it at the top of all APS-C DSLR cameras. However the Nikon is about 25% more expensive than the Sony, and so may be out of reach for some. The Canon EOS 650D seems outclassed among the three, and it has been recently superseded by the EOS 700D (as yet not tested by DxO Mark) which has very similar specifications but the cost of either is significantly higher than the Sony SLT Alpha 58.
The specifics of the scores place the Nikon D5200 ahead of the Sony in all measures by a reasonable margin: DxO Mark score 10 points ahead, 0.9 bits of color depth, 1.4EV dynamic range and close to a stop of low light performance. They place the Canon behind the Sony by a similar margin: 12 points in the DxO Mark score, 1.6 bits of color depth and 1.3EV dynamic range. When you consider that the recorded image from the Sony has passed through the fixed, translucent mirror it might be easy to imagine that the Canon would have had an advantage and that it might have pushed the Sony back into third place of the three, but Sony has actually made a very good and very reasonably priced piece of kit.
The scores for these three DSLR cameras place the Sony SLT Alpha 58 bang in the middle of the group, but as the cheapest by far of the three it wins hands down for value.