From what I read about chimping it is basically viewing your photos as you take them. Is that right? If so, yes I do it. I use the meters on the camera to get where I think should be about right and then take a few shots and adjust as needed. I've found this to be very useful in not only getting the right lighting, but I also share our pictures with our client to make sure we got what they are looking for. There's nothing worse then getting home from a photo shoot and realizing that your best picture had a subject with their eyes closed.