There seams to have been a bit of an explosion recently on people dabbling with HDR photography with a lesser or greater degree of success. It can be a great tool if it’s used right but it’s important to remember it isn’t a wonder treatment for any image and is intended really to maximise detail in shots that have contrasting and difficult lighting rather than one size fits all treatment. There are two main ways it can achieved - by taking a single raw shot and altering the exposure bracketing in your raw converter (good for fast moving subjects) or the preferred way which is to take 3 separate RAW shots at the scene with different exposures. This seams to render the best results as they have more detail and less noise on the image and provide a truer representation of the scene. Most photographers tend to do this by using a tripod and adjusting their cameras auto bracketing by plus or minus 2. I found a few quite good tutorials on this linked below, so hopefully that will be helpful for you.


Tutorial 1 and Tutorial 2.