Possible Duplicate: Calculate object size when I have physical pixel size I am working on the following formula to calculate distance of object from camera: distance to object (mm) = ...
A lady took a photo on a ghost tour where three transparent figures appeared in the photo. The camera was a Pentax Optio S30 3.2 megapixel digital camera. This lady did not recognise the figures and ...
How can I tell if a photo has been edited or manipulated? Are there techniques for distinguishing real photos from fakes? Are there software tools that can help? Are there things I can do in ...
I hope to learn how to determine (approximately) when a picture was taken and/or developed. I have a few boxes of photos to be scanned but prior to doing so I would like to be able to have a better ...