I have a Pentax K200D and would like to auto-bracket in RAW to create HDR images. How do I do that? Can I do that? I've been doing it manually and it's kind of a pain.
I don't know if you can open RAW images from a Pentax in Adobe Camera Raw. I'd imagine you can, though. In the initial shot, you need to make sure you expose it so the majority of your histogram is right in the middle. This will ensure you have a lot exposure to play with. Pull it up in ACR (Adobe Camera RAW), then use the exposure slider to adjust the exposure of the image. You're going to output a few images Output one as shot as a jpeg. Then output four jpeg images over exposed using that exposure slider. One at +1, one at +2, one at +3 and one at +4. Then do the same thing for the underexposed shots. A shot at -1, -2,-3 and -4. In the end, you'll have nine jpeg images. Use a program like Photomatix to blend them into an HDR image. To keep all the jpegs sorted out as I output them from ACR, I just call them what the exposure for the shot is set at (0.jpeg for the as shot, +3.jpeg, etc.).
