And you’d think Camera LUTs should work precisely the same way every time you use them. A Camera LUT seems like it’s operating with Mathematical precision. This type of LUT is really a merging of Technical and Creative LUTs. Camera LUTs – A good example of this kind of LUT is the ARRI Alexa Rec 709 LUT, designed to be applied to footage recorded to ARRI’s flat Log-C recording setting.And there’s a broad type of common color correction LUT where this incorrect assumption happens regularly: The problem occurs when we assume a Creative LUT is actually a Technical LUT. Creative LUTs – These types of LUTs can be generated in software, allowing – for instance – completely different grading apps to share looks between them.For instance: A plasma display and the output of your inkjet printer (technically, this is the goal of ACES – an in-development color space that covers the human visual spectrum – but conceptually the end-goal is the same). The end goal is to have the same image look perceptually identical on two different viewing devices. Technical LUTs – These types of LUTs are designed to transform an image from one color space / gamut to another.What many post-pros don’t understand is that there are several types of LUTs: You’d also think any LUT that comes from a camera manufacturer or that ships with your color grading software is a precise (and perhaps fool-proof) method of getting your ‘flat’ LOG images into a nice rich HD image. When reading about LUTs you’d think that there must be one single perfect LUT for whatever operation you’re performing… for instance, taking the LOG-recorded images from a Digital Cinema Camera and turning them into properly viewable High-Definition images. A LUT can also be used creatively to impose a specific ‘Look’ on a source image, such as the Bleach Bypass look. A LUT can be scientifically precise (such as moving from the sRGB color space to the DCI P3 Color Space). Updated: Janu– updated ARRI LUT generator text and linkĪ Look-Up Table (LUT) is mathematically precise way of taking specific RGB image values form a source image – and modifying them to new RGB values by changing the hue, saturation and brightness values of that source image. Color Correcting With LUTs: One Approach. Tutorials / Color Correcting With LUTs: One Approach / What is a LUT (and how do you use a LUT for color correction)? Series
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