Ever wondered how some photographers can take a shot with amazing detail and colour even in the darkest and brightest areas? It's a technique called High Dynamic Range (or HDR), where multiple exposures of the same scene are captured. Then, the photographer melds the photos together in Photoshop, taking the best parts of each exposure.

The problem until now has been that it's very time consuming to merge the shots together, making HDR more of an artform than a practical every-day photography tool.

That may be all about to change, with Pentax announcing the launch of two new digital SLR cameras with built in HDR capability.

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