You guys are way too worried about reproductions. Like I said, for an extremely detailed poster like Grindhouse, it is very difficult to create a perfect or even half-decent reproduction. Reproducers like MovieGoods are using special "blow up" software to "blow up" relatively small JPEG images to 27x40 300dpi proportions. "Blow up" software -
like Alien Skin Blow Up 2 - does a good job "blowing up" images but does a poor job "blowing up" text, so you can nearly always spot "blown up" reproductions. Here are two examples.
Grindhouse: The source image (attached below) is taken directly from Heritage. The source image is actually pretty good: 2048 pixels x 3000 pixels @300dpi, which is 6.8" x 10" @300dpi (dots per inch).
But the small text is already fuzzy in the source image. That is impossible to correct. Plus you have to quadruple it in size, which will make it even worse. Here's what the small text looks like "blown up" with Alien Skin Blow Up 2 to full-size, actual print size (27"x40"@300dpi). Notice the small text is hopelessly illegible - on my original the circled sections are legible. Even the larger white text is slightly bloated and fuzzy:
Apocalypse Now: Here's another example of an older poster "blown up" with Alien Skin Blow Up 2 from a large, relatively high-quality Heritage JPEG photo to full print size. Again, the "actual print size" (300dpi) result is hopelessly fuzzy and illegible:
This "fuzzy" text is what I see on the 10 or see reproductions (Superfly, etc.) that I have. Of course it's possible that the reproducer may have a super high-quality scanner or access to the original master digital file and may get better results. But that's a big IF.
Here is an example of the super-high quality you need to print out a perfect reproduction -
this is a 100mb "Dark Knight" file - takes a long time to download. (This is from the official Dark Knight website).
Here is another example -
a 250MB "Bloom Brothers" poster file (from the official movie site).