pixel peeper

Noun

 * 1)  A person who carefully scrutinizes a magnified digital photograph in order to evaluate resolution and image quality.
 * 2) * 2004 March 27, Michael Reichmann, "The Case of the Nit Picking Pixel Peepers", The Luminous Landscape (luminous-landscape.com) (retrieved 23 April 2012) :
 * Those whom I have called pixel peepers are satisfied with nothing less than an intimate dissection of a camera/lens' abilities (always at 100% pixel magnification), without regard for whether or not perceived optical defects are even actually visible in real world prints.
 * 1) * 2006 July 17, Aravind Krishnaswamy, "Canon 17-55mm f/2.8 IS USM review," Aravind's Reviews (www.aravind.ca) (retrieved 23 June 2011) :
 * Overall unless you are a merciless pixel peeper I can't imagine someone being unhappy with the sharpness of this lens.