syburn wrote in post #15089216
Thanks for that. Will the raw be better than my old 350D do you think?
It depends on what you mean by "better". If you're talking about dynamic range, then it'll be better, but not necessarily by a lot (Canon hasn't improved by all that much in that regard). If you're talking about tonal smoothness, then it will probably be slightly better because the 40D and up are capable of recording 14 bits per color channel.
If you're talking about what the view will look like at 100% then it may be closer than you'd expect, but remember that the 50D has nearly twice the resolution of your 350D, so it'll retain more detail while yielding a noise signature no worse than your 350D (and probably a little better, actually).
Now, depending on the lens you use, you might not actually see the additional detail the sensor is capable of capturing, but it is capable of capturing it if you use a sufficiently good lens. Even the modern kit lens (the 18-55 IS) is capable of sending tons of detail to the sensor. It's quite a lot better than your 18-55, and Canon improved the optics precisely because the sensors it was having to target have greater resolution.