posted on May, 11 2010 @ 06:24 AM
Originally posted by ppk55
Thanks everyone but no-one has still got the 'under the flag thing'.
However it's allowed me to examine this photo further and if this is not the boundary that separates the scotchlite screen from the foreground then I
don't know what is.Please google 'scotchlite' .. it was used in 2001 A Space Odyssey by Stanley Kubrick. Produced 1968.
The generic term is "front- projection
". There are several problems with this
- As others have pointed out, this is a process you would use to create the illusion of a bright background, not a dark or even medium one. In
"2001", Kubrick used front projection to make the indoor set look like an outdoor scene under the indirect lighting of a cloudy sky, while the sun
shined on the landscape in the background:
The very bright, single-source illumination in nearly all of the Apollo photographs is all wrong for this process. It would cause glare on the
projected image, and if there are shiny objects on the set, they can cause discrete reflections and hot-spots on the background.
- Speaking of reflections, the whole principle of front-projection is based on the scotchlite screen, which is retroreflective - that is, it reflects
light preferentially directly back towards its source (see above link). If there are shiny objects in the image (such as a mylar-covered LM or an
astroanuts glass helmet), they too will show the light. In "2001" you can see this in the scene with the leopard with its freshly-killed "zebra"
(it was actually a dead horse they painted stripes on). The cat's eyes reflect the projected light back towards the camera throughout the shot:
- The biggest problem with the front-projection hypothesis is that, although it might be workable with individual, carefully-composed shots, the
illusion falls apart when you have many photographs of the scene taken from different angles - which is what we have from the beginning of roll 134.
The multiple images, taken from different angle, show telltale shifts in position of background objects that are consistent with parallax. For
objects in the distant background, sometimes it takse a shift of several meters (or tens of meters) to show parallax, but it is there. One of the
neat things you can do with photos (whether from Apollo missions or your own family vacations) is to find two photos that have the same static
backgrounds and make 3-D stereo pairs with them. AS17-134-20378
make a dandy
pair. What appears to be a basically flat valley floor is, in 3-D, revealed to be a rugged & rolling landscape.