Hi, I've done long exposure photos before and know how to do them etc... But I have a question about how the photo is recorded and the process the camera uses. Lets try to explain my thoughts; So your taking a long exposure and someone walks across the photo with a black Tshirt on, then followed by another person with a white tshirt on. As these are opposite colours would they cancel each other out a bit? The same could be said for all colours. The reason I'm asking is because I'm trying to show movement through a space as accurate as possible so if colours are being cancelled out it will affect results? Thanks!