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>> itor And because it can emulate virtually any other display device, the colourist can see for themself any chosen delivery format without leaving their seat. This means the Dolby monitor replaces the need for an array of other monitors to check content. How does Dolby achieve this level of performance? This is achieved by Dolby’s combination of an LED backlight with an LCD front display panel. Dolby has a patented dual modulation process that provides unprecedented black levels, along with precise colour accuracy at all luminance levels, and also enables very wide dynamic ranges to be achieved. Dolby’s LED backlight unit comprises 4,500 LEDs arranged in 1,500 RGB LED triads that directly illuminate the LCD panel. The output of each R, G, and B LED is modulated on a frame- by-frame basis with respect to the image content for each frame. When the image requires that any portion of the screen goes dark, the LEDs are dimmed, which means that no light will pass through the LCD to the viewer. The result is absolute black levels that challenge the limits of most instruments to accurately measure this. The second element of dual modulation is the LCD panel itself, which is modulated in real time based on a complex algorithm composed of a variety of matrix and 2-D filtering operations. The modulated LCD, together with the modulated backlight unit forms the dual modulation process that is directly responsible for the amazing image quality. Dolby has extended the maximum luminance range of a professional device from the Rec709 standard of 120 cd/m ² up to an amazing peak luminance of 600 cd/m ². This Dynamic Reference mode not only allows viewing in high ambient environments, but also provides the ability to view the full high dynamic range of the latest high-end digital cameras, like the ARRI Alexa, Red Epic, and Sony F65. So what about emerging trends and future formats? The PRM-4200 already displays HDR content from the latest high-end digital cameras like the ARRI Alexa, this allows the user to view all 14 spots of exposure that the Alexa can provide. No other professional display can do this in the market today. his upcoming movie The Hobbit, and James Cameron advocating 60 fps capture and display for digital cinema, this is another future-proof feature that has been built in to the PRM as standard. The PRM is now well-placed to become the industry standard device for AMPAS® ACES workflow. This new standard from AMPAS has a wide colour gamut and extended high dynamic range. Dolby has developed its own ACES ODT (Output Display Transform) to allow content to be viewed in HDR and P3 colour space. So who is investing in the Dolby Pro Monitor? It is really now setting the standard in the postproduction communities globally. In the UK, the likes of MPC, The Mill, Envy, Prime Focus, The Farm, Films@59 and Deluxe are just some of the leading names to have invested in multiple units of the PRM-4200. The Dolby Professional Reference Monitor has also recently been used on a number of high-profile Hollywood movie projects, including David Fincher’s acclaimed Girl With the Dragon Tattoo, as well as War Horse, Mission Impossible: Ghost Protocol, and most recently Mirror Mirror. At NAB last month, we also announced that we have added support for content shot at 48 frames per second (fps). The PRM-4200 already supports 50/60 fps, but with the extended support for 48 fps is now set to be part of the move towards high frame rate movies. With Directors like Peter Jackson using 48 fps for ASK OUR EXPERTS POST YOUR QUESTION ONLINE: Search ‘tvbay’ Tel. +44 (0)1635 237 237 Email. questions@tv-bay.com TV-BAY MAGAZINE | 47