I thought I should mention the new Tamron 18-400mm F/3.5-6.3 Di II VC HLDModel B028 telephoto lens. Thats 27-600mm equivalent
For those who have used a bridge camera for any length of time will know, no matter how they improve the sensors and lenses they just dont quite stack up against the out put of a good DSLR or mirrorless camera.
As with all things there are exceptions, The FZ2500 from Panasonic or the RX10 are two bridge cameras that perform very well and the increased zoom range of the Panny is a definite draw card.
But would you prefer something different? How about a DSLR with one lens from 18 mm to 400 mm focal length. Sound like you? Well if you have a half decent Nikon or Canon DSLR not doing much how about putting the Tamron on it?
The down side of course is the the weight, its likely to be over a kilo hanging around your neck when you add in the weight of your camera body and that gets heavy after a couple of hours. Then there is the size, at 79 mm diameter and 120+mm in length closed down its going to be hard to hide it in a crowd. If you are going on Safari and you only want one lens, this would be my pick even tho its size and weight arent small.
For those of us who prefer not to carry around a brick, maybe sticking with your Sony or Panny bridge camera is a better option.
Price wise though it is not excessively expensive nor is it particularly cheap at $1188.00 NZD. I have a feeling though that it may be a good seller for wild life photographers who want a bit more flexibility in the setups. One to watch to be sure.