While Sony's sensor technology has been great, until last year there were significant issues with the full frame camera line up that prevented many people from

While Sony's sensor technology has been great, until last year there were significant issues with the full frame camera line up that prevented many people from switching: poor battery life, difficult controls (no joystick for moving focus point), slightly worse colors, complex menu system, not great autofocus using adapted lenses, small range of native E-mount lenses. This changed with the A9, then A7R III and now the A7 III, and the Sony lens range has really improved. While the configuration is still a bother e.g. setting up eye autofocus (eye-AF), the other issues have been addressed. Weather sealing is below the competitors. The A7 III represents tremendous value compared to the competition, I think it will shift people to Sony — I switched to Sony after 12 years of shooting Canon DSLRs and quite an investment in Canon 'L' glass. At the same retail price the Canon 6D Mark II is an embarrassment compared to the A7 III. The A7 III is probably better than the Canon 5D Mark IV, retailing at 1/2 the price. Now, the camera itself doesn't make you a great photographer, but if you are parting with that kind of money you want a tool that helps you, and the Sony is very impressive. Eye-AF speed and accuracy alone has breathed new life into my Canon lenses and allowed me to get shots that I would have missed with my Canon bodies.