How could I compare what a normal eye can see to a camera lens? I just went through a very comprehensive article @ CambridgeInColor, but I'm still not really clear.
When I take a picture with a SLR camera from an object about 30m from me: what focal length do I need to use, how should I present this picture to truly capture what the eye can see (because of the 40-60° that we see 100% everything)? And how should I print it to scale? Are there any options so I can put a ruler, or a human being at a certain point to be able to show the differences?
I hope I'm clear here, but if not, please comment and I'll try to explain better! What I'm aiming for is that I need a picture, but not a picture in itself, but more like what the eye will see at that position. Not what the camera registers.