It should be noted that you will not see an increase in low-light sensitivity by shooting with an HD cam in SD mode. If you frequently shoot weddings/receptions in poor lighting your only choces are to add light or shoot with the best SD low-light cams. The best low-light pro-sumer cams are the Sony PD-170/VX-2100…bar none. If you can convince the bride to allow you to add light…rock on. But if that isn’t an option, its 170 or grainy video. Even the best low-light HD cams are not on this same level yet. Perhaps they are getting close but they ain’t there yet. Someday, sooner than later I hope, the HD tech will catch up with the SD tech and they will be on an equal playing field.