Weight has never been an issue with me. I used to shoot Exacta (East German, built like a tank) SLR and medium-format rangefinder and TLR. None of those were light, and the ergos were strange.
The 40D has a big buffer, the XSi a smaller (but still respectable, as long as you're shooting JPEG) buffer and it's pretty quick even after the buffer runs out with fast SD cards.
I know a few tricks for color correction shooting a gray card and creating a correction profile.
An easier IR solution is to get one of the Sony "Night Vision" cameras and put a strong Neutral Density filter on it to convince it that it's really night.
no subject
The 40D has a big buffer, the XSi a smaller (but still respectable, as long as you're shooting JPEG) buffer and it's pretty quick even after the buffer runs out with fast SD cards.
I know a few tricks for color correction shooting a gray card and creating a correction profile.
An easier IR solution is to get one of the Sony "Night Vision" cameras and put a strong Neutral Density filter on it to convince it that it's really night.