Maybe a little off-topic, but I recently had two large 40x60 metal prints made of a couple stacked and stitched micrographs I made last year. They were done by bayphoto.com and I am quite pleased with the colors and details. The packaging (a wood reinforced crate) was excellent. Not cheap, but you don't need to frame them, and a first time user gets 25% off.
Here are links to the original giga-pixel images:
http://www.gigapan.com/gigapans/228727
http://www.gigapan.com/gigapans/8dc6174 ... 997ee492a9
John Hart
hart3d.com
Crystal Art - Large Metal Prints
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