I have a question as a camera n00b and I have nowhere else to ask whre I might get a serious answer.
I'm interested in getting a bridge camera, more specifically I was interested in Sonys DSC-HX200V, and now I'm interested in the newer DSC-HX300B model. I love the form factor and the ultra zoom abilities. I had a chance to play with a friends older DSC-HX100V and it's nice, but the quality of the images are pretty "meh" and I figure one of the reasons is likely due to the relatively small sensor. On the flipside I'm in love with the image quality from Sonys DSC-RX100 camera, but I would want the form factor and zoom of the HX300B.
I'm hopeful that one day Sony will merge the best of both those worlds together, but I'm unsure of whether that may ever happen, or if technological reasons prevent them from doing so. So my question to you GAF is can bridge cameras be made with larger sensors like the RX100 and still manage to maintain the same level of zooms as the HX300B (ie. 50x optical) and quality of the RX100? Am I foolish to be holding out for that one day such a camera may exist? Obviously no one knows if Sony will ever do it but them, but I figure at this point the way they've been going with their camera business, they're probably the most likely to fire out such a device. I have no doubt that even if they could make such a camera that it'd be bloody expensive given the prices of the cameras I've mentioned already. I think I'd be willing to spend upwards of $1000 or so for such a camera though.
TLDR version: Why don't bridge cameras have much larger sensors?