Genuine Fractals is a Photoshop plug-in that allows for enlargement of photographs without the usual quality decrease. Which, basically makes it awesome, even if it does cost $159.95.

The interface (image taken from the website for Genuine Fractals http://www.ononesoftware.com/detail.php?prodLine_id=7)

The plug in uses some highly advanced interpolation that allows the image to retain high resolution at massive sizes. It is considered industry standard. And well, it is just awesome.

The earlier in the process that Genuine Fractals is used, the better. Raw images work best since they have the most data. But, using anything from a magazine, just leads to a nice interpretation of a Lictenstian.

(an apt reference– it is always hopeless to enlarge an already printed work)