FWIW: a video camera was the most important tool for me in learning to shoot and diagnose errors. I have an advantage I guess, being trained in animation (study of motion broken down into 24 increments of a second), but nothing beats a 1st person impression of what one is doing like a 3rd person point of view. The camera doesn't perceive; it only sees. It can be quite brutal, but it will never lie to you.If he would record himself shooting, then post it up, there are a lot of good knowledgable people that could offer up valuable advice.
**relliot beat me to it**
Self diagnosis rarely works, people usually have an unrealistic perception of their abilities. This then can lead to equipment modification or changes while they chase a hardware problem that doesn't exist.
Not saying that's the case here at all, because the OP is searching for answers by asking.
Hope this helps.


















































