> Actually, appearance is precisely what I'm talking about. Follow me > thru... Place a small sign on a stake and stick it in the ground. Take > three paces and place another sign in the ground. Line yourself up with the > two signs and walk thirty paces. When you look back at the signs the first > one will look about 100 feet away and the second will look about 10 feet > farther away which is as it should look because that is their relationship > with each other and with you. Now with out moving, take a shot thru your > 35mm SLR 500mm lens at the signs. They now look a lot closer to you and > much closer to each other which is also as it should look because the 500mm > lens on a 35mm SLR gives a ten X scope effect. The signs look about ten > feet away and one foot apart. it would look exactly as it would appear if you did it with a 19mm lens, a 50mm lens or a 1000mm lens.. I wrote: > >Fit your camera to a tripod and lock on a 28mm lens and take a pic. Fit a > 100mm and take a pic. If you print both pics they will look quite different but if you > enlarge the centre of the shot taken with a 28mm so it frames the same as the 100mm > shot, it will look identical. This is because there is no difference in the spatial > relationship between the objects, the different focal lengths are just showiung you more or less of > the scene > > I do not understand your point. You say I can not alter spacial > relationships in an image by changing focal length and then claim to prove > it by changing length of focus (raising your enlarger head) and altering > spacial relationships in an image. I'm afraid I can no more change the spatial relationship of objects in a negative than I can turn water into wine, but I'd love to know that trick - I've a pic close to hand that I should have taken from three feet to the left ;-) me: > >I have done a full sequence of shots showing this relationship, and once > someone sees it they comprehend immediately even though it seems counter intuitive > compared to what you see through the finder. > Again, I don't understand your point. You can duplicate with your enlarger > what I can do with a zoom lens. So? soooo, to change the spatial relationship between objects in a scene you either have to move yourself or the objects. k
