I just ran across another blog article that asked the question if mobile phones would take over in the long run and overthrow all other cameras because the sensor technology and the fact that you tend to have one with you all the time.
I'm not so sure for a two main reasons.
1. Control. Cameras tend to get better and better, but even the best automated decisions will not necessarily reflect your intentions.
An example: think about a backlit portrait. Without built-in intelligence, the camera's light meter willtell the camera that there's a lot of light and the image that comes out is likely to be a silhouette of a person. Most cameras nowadays will detect this and compensate for it, resulting in a well-exposed person (and most likely a slightly overexposed background). I guess in most cases that's what the person behind the camera wanted anyway, so it's okay.
But how about the times when a photographer intended to produce the silhouette picture but didn't have a way to tell the camera that that's what they wanted?
The way the current mobile phone cameras look, it's very hard for me to believe that they will get to this level of control any time soon.
2. Sensor size. Different sensor sizes result in different depths of field (DOF) and control over DOF is a very important tool for most photographers.
In-focus and out-of-focus areas in a picture are one out of a whole array of essential tools for photographers when it comes to telling a story in a picture. Focus will show or hide things, focus will help you guide the viewer's eyes through a picture.
Smaller sensors make it very hard to control DOF. Everything tends to be in focus. Bigger sensors make it easier to control DOF. A photographer can place focus where it's important. And as things look right now, mobile phone cameras are pretty unlikely to get larger camera sensors.
Even if mobile phone cameras got larger sensors, that would mean that the lenses needed to be bigger and further away from the sensors, adding bulk and size. Very unlikely.
Will newer technologies and computational photography replace the need for bigger sensors in the future?
Who knows, but at this point in time, even the Raytrix and Lytro cameras cannot do their job without a certain level of bulk, and the results are by far not where they'd need to be.
What do you think? Are we going to see DSLRs disappear any time soon?