The Venetian - HDR Photography 19.25" x 26.75" 1000Pc Puzzle. High-dynamic-range (or HDR) is a photography technique merging multiple versions of an image. These images range from too dark to too light, but when combined create color more brilliant than either a camera or your eye can actually see. MasterPieces Puzzle Company has been around for over 15 years with a variety of puzzle titles ranging in difficulty and themes to accommodate puzzle lovers the world over. All puzzles are also environmentally friendly, using recycled materials in production and packaging as well as biodegradable storage bags and soy based inks.