“ I have observed that in cameras, special sensors help to {focus|concentrate|maintain focus|target|a**** automatically. The actual sensors connected with some cams change in in the area of contrast, while others make use of a beam of infra-red (IR) light, especially in low lumination. Higher specs cameras oftentimes use a combination of both methods and probably have Face Priority AF where the digital camera can 'See' your face and focus only in that. Thank you for sharing your opinions on this blog. ”