All three models have gained a Merrill in their name, which is in honor of Richard Merrill, the co-creator of the Foveon X3 sensor. The SD1 remains unchanged in the hardware department, but along with its new name comes a new price of $2,300. That's almost exactly 1/3 the $6,899 price it's currently commanding online. While it still doesn't perform exactly like a 46-megapixel camera, that much of a price drop should make everyone see the SD1 in a bit of a different light. Sigma says the change comes from changes in the manufacturing process that has made things more efficient.