![]() Look Up Tables (LUTs) are one of the most commonly used tools for video, photography, and digital imaging professionals. LUTs are an invaluable tool for filmmakers as they can help ensure colors look consistent across different devices/screens, no matter what source we originally shot our footage in. LUTs are mathematical functions that convert RGB numbers from one color space into another, allowing us to adjust the content of our images so they match up with a certain reference space like Rec 709 and other standards such as sRGB and Adobe RGB 1998. To ensure color accuracy when converting video from one color space to another, Look-Up Tables (LUTs) are used. This three-channel system provides an exact representation of how these colors interact with each other when represented on a display device such as a television or computer monitor. The Rec 709 color space uses three channels - red, green and blue (RGB) – to create the millions of colors that compose our images. It specifies the technical parameters needed to faithfully represent colors in a digital video system. The Rec 709 color space is a standard for broadcast HDTV developed by the International Telecommunication Union (ITU) in order to provide a consistent, accurate and reliable way of expressing colors on television screens. Generally speaking however Rec 709 is suitable for all resolutions up to 4K. For this purpose an alternate LUT format should be considered, such as LogC or HLG10. The range of colors allowed by Rec 709 also works well in digital footage, resulting in an accurate representation that viewers will recognize as true-to-life.Īlthough versatile, it is important to note that Rec 709 LUTs should not be used on 8K footage as they may not provide enough range of colors to accurately represent those images or videos. It uses 8-bit color depth, which is enough information to create a very authentic image with excellent contrast and saturation without being overly saturated. Rec 709 LUTs are based on the ITU-REC709 standard for HDTV production and editing which defines a specific color space that is ideal for broadcast media. ![]() ![]() ![]() Content from one device can be automatically matched to look like it was all filmed in the same place with the same device. They are used for color correction and image or video production and can help to create a unified look through color matching even when videos are filmed with different cameras. Rec 709 LUTs (or Look Up Tables) are crucial for achieving the highest quality images and videos, both in terms of technical accuracy and aesthetic appeal. So grab your coffee, buckle up and let's get started on our journey exploring Rec 709! Introduction to Rec 709 LUTs But what exactly are these mysterious LUTs, and why do they matter? In this blog, we'll take a closer look at Rec 709 LUTs and explain why they should be in every video editor's toolbox. If you’re an experienced videographer, chances are you’ve heard the term “Rec 709 LUTs” floating around. ![]()
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