are they ever going to come out with a digital AND film camera??

Question

my reason behind wanting one is that you can easily set up a shot by taking a look at the digital instant photo. then you can tell if there is something you would like to change (try doing that at the developer!) plus if you had the option, and ran out of film, the camera would hold a certain # of pics, so you are always ready for a shot!

Answer 1

When digital cameras just started, this was what everybody expected. Some electronics companies actually did produce sensors that you could insert into any camera (instead of a roll of film). The thing was, they were all crap, and that technology was never develloped into anything usable.
Leica is the only company to date to make a proper digital back for their 35mm cameras. On the newer models, you can remove the film cover and attach a digital panel with a sensor. They did this as a prestige project - not because it made business sense. None of the other brands followed because it was ridiculously expensive. For less money than a digital Leica back, you can buy a complete high end Nikon/ Canon digital SLR body.
That's probably the way it will stay. You can still use old Canon/ Nikon/ Pentax/ Minolta lenses, but you have to buy a completely new body.
The only place where digital backs really took off, was with medium format cameras. So if you happen to have a Hasselblad or so lying around, you can get a digital back for that camera! These are also insanely expensive, but professional photographers can justify it as a buisiness expense.
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Ummm, I missed you additional information.
For 99% of all shots, digital will do just as well or even better than film (in low light situations, for example), so taking a second shot with film wouldn't add very much.
For those remaining 1%, where you NEED to use film, you can nail the shot with light meters, etc., to get a perfecty predictable outcome. So in those case, taking a preview with a digital camera wouldn't add very much.

Answer 2

Now- digital cameras have better image quality than 35mm cameras.

Plus- the mechanism to split the light between the two sensors (film and ccd) would mess up the image quality a bit, and add needless complexity.

film is dead. Sorry.

Answer 3

Why ? take 2 pics of the same thing ?
Besides the people who use film generally do not want digital so WHO would by one ?
As a photographer of 30 years, NOT me . . .

Answer 4

Uh, they did. Back in '91.

http://en.wikipedia.org/wiki/Digital_camera_back

Answer 5

I think they already have one. I don't know much about it though..