This has to be the most often asked question. For many, DSLR is solidly entrenched in Canon and Nikon. All camera systems comes with its fair share of pros and cons.
So why Sony? Fundamentally, it has a lot to do with my shooting style.
1. Electronic viewfinder.
The game changer. With liveview in the viewfinder, you can see exposure changes and a accurate depth of field preview. It’s a wonderful time saver and I know I got the shot I wanted without checking the back of my camera.
2. Auto-Focus in more ways than one!
This has got to do largely with my shooting style. With optical viewfinder DSLR, using the LCD screen to capture a shot has a trade-off by default of the focusing system, Contrast-Detect AF (CDAF). Issues include SLOWER focusing. This is by far the killer. Imagine capturing the moment 2 seconds late and EVERYTIME.
For Sony, I quote "Utilizing the Translucent Mirror technology, the autofocus system is able to continuously monitor the image frame and alter the autofocus quickly and responsively. Two phase contrast sensors, a 19-point sensor above the translucent mirror and a 102-point focal plane phase detection sensor, work together to deliver greatly improved subject tracking performance and increased precision." This is why Sony does not have DSLR. They have DSLT (ranslucent)s
Sounds great on paper, but does it perform well in real life conditions? I have been with Sony since their first DSLT, A33. And with each generation, the focusing just got better.
3. Zeiss Lenses!!
The drool worthy Zeiss with Autofocus! Nuff said! Scratch that. Couple Zeiss with a killer Super fast Sony SuperSonic Motor (SSM) Autofocus system!