For professional photographers working on location, the usual weapon of choice to accompany a digital SLR camera is a lightweight laptop, able to give quick visual feedback on work in progress. Unfortunately, most laptops suffer from relatively small screens and poor colour fidelity.

This is now no longer the case, thanks to Sony's VAIO VGN-AW11XU with its huge 18in widescreen boasting a wide colour gamut closer to a CRT monitor.

There are actually three Sony VAIO VGN-AW11 models to choose from, with prices starting at a modest £899 for the AW11M/H. Modest, that is, when set against the £2539 ticket of the VAIO VGN-AW11, the version tested here.

The jump in price between base and top models can be attributed to four principal high-performance components that demand the premium fee: the high-end dual-core processor, the graphics card, a SSD storage setup, and the choice of wide-gamut-screen.

Take the entry-level VGN-AW11M/H for example, and you'll get a 1680x945 shiny LCD using ubiquitous twisted nematic (TN) technology.

The top model trumps this in style with its full-HD 1920x1080 screen featuring RGB 3-chip LED backlighting. And that's a matt-finish screen, worthy of professional use as it doesn't suffer from distracting reflections in daylight use.