The forced perspective thing is really more challenging than I thought it would be.
I think the critical thing is that both the distant object and the close object need to have the same focus. Otherwise you can tell that they aren't the same distance from the camera. To have them both in focus, you need to play with the depth of field by having the smallest aperture you can get. (Which ironically is the highest number.) A smaller aperture means you have less light hitting the sensor, so you need a lot of light to start out with, or you need a slow shutter speed to try to collect more light that way. So you should either be outside where it's bright, or else if you are inside, you need a tripod and a couple still subjects.
A telephoto lens tends to exaggerate the limited depth of field in a shot, and you want to avoid that. So if you have a zoom lens, you want to be zoomed out to the wide angle end of things.
With all these technical constraints, it makes the artistic side of things even more difficult, because you can't be all that spontaneous. You're fiddling with the camera and your subjects are getting bored.
I'm impressed with all the entries so far, so don't think I'm criticizing anyone. I'm just ruminating about the thing.
|