I've been shooting HDR, basically 5 exposures. I'm planning on some night skyline shooting. I'm kind of confused though. Typically a daytime shoot might be f8 @ 1/250-125-60-30-15. So obviously this type of exposure is based a short exposures. So at night for the shadows I would need maybe 15 to 30 seconds and maybe the top highlights 1/15. Does this make sense? I feel like I'm missing something. I'm wondering how well the software can handle a shadow exposure with totally blown out street lights. Oh, and I would shoot 7 exposures. Thanks in advance! Phil