I have had my 850 for about four months now, and I am not impressed. I mainly shoot portraits and weddings, and it is not suitable for my style of shooting. At almost every single shoot I have used it, the camera has frozen up on me making it impossible to take pictures, press any buttons, or even power it off. Because of this I have missed lots of shots that are important on wedding days. My clients feel awkward with the long pauses, and I become embarrassed because it makes me look unprofessional with what is supposed to be a professional camera. The live view focusing system produces the best quality images, but it is extremely slow and isn't realistic when shooting portraits. To me, that is unacceptable and I am in the market for a different camera. However, for shots like details, stills, and situations that I can have complete control over, the quality of the images is great and captures great detail. Considering how much money I spent on this camera model, I am disappointed with its performance overall.