What does TVI/ph detail mean? Apparently the Canon xl h1 has the highest (800+ TVI/ph) detail of the inexpensive hd video cameras recently brought to the market. Why isn't it 1080 or 1440? What is 800+ TVI/ph? According to DV Magazine the Sony Z1 and Panasonic HVX200 both resolve at 540 TVI/ph. Does this mean they have less resolution than the Canon?
