Thanks for that tip Jay they is a lot of info in there...........daveCool...no probs stwert.
Also to find the focal length, you can actually go to an images 'properties' and usually it will tell you there to
cheers
Jay
Edit: I had to come back and ask this to get my mind straight if the image is a focal lenght of say 24mm the camera I use to set up that projection should be set at 24mm to iron out distortion? You have to under stand that I do not have any one else to ask these question but you guys.....dave