For all brand wars out there, one might ask why I'm using Olympus DSLR? The answer is obviously simple, because I choose Olympus. I'm not a pro and never a pro but a user of the camera that I choose. Its all about preference and which system you are familiar and attached to it. I choose Olympus simply because I was attached to it from the beginning. Again its a matter of preference and very subjective. Each DSLR systems has their pros and cons therefore their potential and limit need to be utilized. Although I talk mostly about higher end Olympus camera here but still the E-30, E-620, E-520 share the same technologies such as the original Olympus invention - SSWF (super sonic wave filter for dust reduction), IS (In-body Image Stabilization) and Live-View in the LCD. In addition, E-30 and E-620 offer few interesting art filters which add more creative shooting in-camera. And believe me you will be addicted with the art filters. The basic and pretty small camera, E-420 is