Here’s an image that’s a good example of a technique I’ve been working on. I had both interior and exterior issues to deal with here. The outside areas ranged from blindingly bright concrete in the foreground (about f/3 billion) to the deep shadows in front of the rear structure. The interior was a good one and a half stops below my darkest exposure for the outside.
While this might have been a good candidate for a hand blend, I opted instead to shoot it as a 3-exposure Photomatix blend (I prefer Blends over HDR), and flash the interiors. Two lights were used, both of them SB-80s triggered by Pocket Wizards. One is directly behind the nearest vertical windowframe (those little video-tripod lightstands have tiny profiles) and is aimed straight into the room, with the Wide Angle Diffuser (WAD) lens down. The second light is bounced in from the right side. My exposures were -2, 0, +2, and the lights fired on all three.
After Photomatix did the blend, I layered in the darkest exposure to gain more detail in the foreground. I’m going to continue working on this technique, as it can really rescue a shot when there’s a serious time-of-day problem!