I'm looking for opinions based on actual experience. The question is, if you did not bracket a shot but did take it in RAW, is it better to create additional exposures in your RAW processing software - a +2 EV and a -2 EV for example - so you can feed your HDR software multiple exposures? I use Photomatix and have played with creation of a 'pseudo-HDR' image both from the method above and from just the single photo. I've also done it with RAW directly in Photomatix as well as with jpg, which they claim is just fine.
What I have seen so far makes me believe that RAW or tiff as input in Photomatix is better than jpg, better being defined as the final image looking more realistic and not over-saturated (which I usually want to avoid). I also feel like the 'created' extra exposures results in a better (again, more pleasing to me) final tonemapped image than the single file alone.
Any thoughts here? What are your experiences?