What he said! You need three differently exposed photos in order for HDR to work properly. You should also use a tripod so each photo is identical except for the exposure. Any sort of movement on your part will show in the combined pictures.What DJ means is take the same picture with -2.0EV, 0EV and 2.0EV. That way you have an underexposed pic (very dark), normal exposure, and overexposed (very light) then merge those three.
Many photographers use HDR to improve their photos. It's not a process for "idiots". Sometimes there are difficult lighting situations and there is no way to expose every part of a photo correctly, this is where HDR helps.oh great, more reading
The intention of HDRI is to accurately represent the wide range of intensity levels found in real scenes ranging from direct sunlight to shadows.
for more idiots like me.