Wow. That's cool. I'm sorry, that doesn't contribute much. I just find stuff like that really cool. I love landscape photography.
Could you do it by chromakeying?
I know in the film industry we love a cloudless blue sky because you can key in any background you want - it works like a giant blue screen.
This is, of course, for motion picture, in which one would be less likely to see small imperfections.
Could you key in an entire new sky including the mushroom cloud? Or would that also be easily detected in a still image?
-Andrew
This is exactly why you need to see something better than the tiny little photo that appears all over the web. You need to see the original file off the flash card.
Assuming that one could get a look at it, one could check the metadata for the time stamp to see if it correlates to the crash time.
Also, if you could get a look at the source/original file you could then determine if this was different from the print file which would be helpful to see.
Now assuming both source and print files are identical, and both files show the cloud, the discussion has reached the end of the road. It's real. If all you have is the print file, or if Val says the print file and the source file are the same, then careful examination at 3-400% magnification of the color channels, as well as the combined RGB view, will reveal evidence of cloning or other artifacts brought into the cut and paste. Since we are on a seamless background, and we are dealing with a nebulous shape in which the edges would be unpixelated, smooth and at varying degrees of opacity, it's extremely unlikely that this could be believably pulled off.
Also, in looking at the print file, one can check the creator code. While the file might be called EndofSerenity.jpg, if the creator code is BIM then that means it is a Photoshop file.
Regarding chromakeying or green screen, that is possible, but that's why you need to look at the original file. The movies can do Titanic all day long using this technique and it looks really good, but anything will work at 70 frames per second, or whatever standard they use. That's why you can take a 1 megabyte file and blow it up for a billboard. Nobody is going to notice that it looks like crap as they are blowing by at 70mph.
Now since kt has probably ruined his chances of getting Val to show him the file, the next best thing would be to get a print from her and study that. But he told me that it was just "a paper printout" and he assumed that equalled "garbage."
Well, it may be garbage or it may not, but it's a certainty that the webshot IS garbage, so a serious investigator would at least take the matter as far as he possibly could by getting a print to look at, rather than use assumption for the foundation of his entire argument.
Once you've let it out that you didn't bother to take that extra step it calls everything else down the line into question and that's essentially what we've seen here.