Perspective is pretty simple, it's the one thing I actually understand. ;-) If you are 5 feet from an object, an object at 10 feet will look twice as far away, because it is. Increase your focal length 10x and back up to get the same amount of subject in the frame. Now the objects are at 50 and 55 feet, they look very close together, because, relatively speaking, they are. This is why WA lenses exaggerate perspective, normal lenses keep perspective natural (to our eye) and teles compress perspective. WA = Very close, Normal = Normal and Tele = Far.
NOTE: What constitutes "WA", "Normal" and "Tele" depends on the Film/Sensor format, thats why Focal Length does not dictate Perspective. If you shoot from the *same distance* with a 50mm and a 75mm, crop the 50mm shot so the subject is the same size as the 75mm shot (Or shoot the 50mm on an APS and the 75MM on 35mm) **the perspective of the two images will be the same**. Try it, it's very enlightening. Don (Whew!) > -----Original Message----- > From: Tom Reese [mailto:[EMAIL PROTECTED] > Sent: Thursday, July 14, 2005 6:36 AM > To: pentax-discuss@pdml.net > Subject: Re: Theory of Equivalency > > > Shel Belinkoff wrote: > > Headache time ... I think we'll just put the 18mm on the digi > and the 28mm > > on the filmi, place the cameras on the same spot, and take a > picture, and > > then look at the results. > > After thinking about this some more, I suspect that Godfrey is correct. > AOV is AOV and whatever is in that AOV will be captured. > > It should make for an interesting experiment. I'm looking forward to > seeing the results assuming you put them on a website somewhere. > > Tom Reese >
