I have realized that in video cameras, special receptors help to focus automatically. The actual sensors with some camcorders change in in the area of contrast, while others employ a beam involving infra-red (IR) light, especially in low light. Higher specs cameras occasionally use a blend of both programs and will often have Face Priority AF where the digital camera can ‘See’ some sort of face and concentrate only upon that. Thank you for sharing your notions on this weblog.
iBomma