Image talk:Cablecar.trick.250pix.jpg
From Wikipedia, the free encyclopedia
You have to look quite hard at the image to detect that it's fake. The lighting of the man sitting down and the cable car are somewhat similar - both illuminated from the right - rear. The boy with outstretched arms is also illuminated from the right - though the lighting is rather "flat" - however, in the final image he is reversed, so the lighting is in fact incorrect. At first glance it's hardly noticeable. Sizing discrepancies would be another clue - but in this combined image the sizes look reasonable. Quality differences would be another clue - but again no real problem here at first glance.
I suppose a photography or image expert could detect this sort of thing more easily. David Martland 10:18, 26 Oct 2003 (UTC)
What gives it away for me is the man sitting at the top. He looks like he should be resting his arm against something, but there's nothing there suitable for resting his arm against in the position it's in---the cables aren't quite in the right spot, and would presumably give a little, being cables, so would result in a little different posture. --Delirium 10:21, Oct 26, 2003 (UTC)
Actually if you look carefully you'll see slightly more detail in the faces of the people compared with the letters on the cable car, which show clear evidence of JPEG artifacts. So quality can be used to detect this. Nevertheless, most people won't notice at first. David Martland 10:25, 26 Oct 2003 (UTC)
What about shadows? The kid casts no shadows on the cablecar. Dysprosia 10:27, 26 Oct 2003 (UTC)
what gives it away the most to me is the lighting. The cablecar is in a very blue light, whereas the other two photos seem to be taken nearer the evening, and have a much warmer tone. The focus is also different between shots, causing the people to 'pop' out of the image. surely a better example than this can be used for http://en.wikipedia.org/wiki/Photography ?
This is a very poor digital composite. I knew instanly, in a glance, that it was fake. No need at all to "look quite hard" at the image. Besides the already mentioned problems with warmth vs. coolness, size, lighting, and the man's arm not resting against anything, there is a problem with perspective. The cable car photo is taken from some distance above with a fairly long lens. The people are taken at almost eye level, with a much shorter lens. The perspective therefore doesn't fit. And about the lighting - on the cable car, the light is not coming from the right only, it is coming from behind as well. Notice the side of the car facing us is in shadow. This does not match either of the people. I very much agree that a better photo could be used for http://en.wikipedia.org/wiki/Photography, ideally one from a professional. TK421 05:50, 22 October 2006 (UTC)
