I don't know about any DV camcorders other than my Sony DCR-PC1. Under the "Digital Effects" menu is a "Slow Shutter" option. "1" is 1/15 second, "2" is 1/8, "3" is 1/4 and "4" is 1/2 second.(posted 7938 days ago)For all but the slowest of displays, setting "1" is adequate, though some tweaking of the monitor brightness and contrast is necessary to minimize the vertical bars (from some of the frame being scanned twice during that time. Some of the 1970s video games using vector graphics ("Asteroid" and "Descent"?) need setting "2".
The slow shutter speeds are also useful in poor illumination. Once I shot traditional Fijian dance by campfire light. 1/4 and 1/2 second added a sometimes surrealistic mood, sometimes enhancing fluidity, besides making it possible to get a good shot.