so, im buying a new camera and i come across this.
"Sony has changed the Nightshot feature a few times during production.
The first Sony camcorders could shoot Nightshot in the day. Then Sony
found that people were using the camcorders to see through some
clothing, so they changed the camcorders to have a fully open aperture
in Nightshot mode. This meant in bright light, the picture is
overexposed. Some of the most recent camcorders from Sony are somewhere
in-between. One recent camcorder we have tested limits the minimum
aperture but still adjusts the aperture wider. Interestingly, the
result is that in Nightshot mode during daylight, the picture is
overexposed without a filter. But, using Nightshot in daylight with an
IR filter works! Perhaps Sony has realized that this feature helps sell