Tom Evans December 30, 2017 Share December 30, 2017 Do you know what makes this image look so dirty and gritty? Is it because of the film stock or can this look be replicated in DI? Link to comment Share on other sites
Jussi Rovanperä December 30, 2017 Share December 30, 2017 There's a strong contrast curve and the colors are desaturated. Not a film thing and pretty common look. 1 Link to comment Share on other sites
Tom Poole December 30, 2017 Share December 30, 2017 Definitely film constrain LUT. 3 Link to comment Share on other sites
Orash Rahnema January 1, 2018 Share January 1, 2018 On 30/12/2017 at 11:25 PM, Tom Poole said: Definitely film constrain LUT. What you mean exactely by "film constrain"? Is It another way to say film emulation or is It something different? Link to comment Share on other sites
Amada Daro January 14, 2018 Share January 14, 2018 It looks like this strong contrast curve could be complicated to create without using a film emulation LUT. Any properties that can be modified in a LUT to make an image appear more gritty? Link to comment Share on other sites
Lowepost January 14, 2018 Share January 14, 2018 6 hours ago, Amada Daro said: Any properties that can be modified in a LUT to make an image appear more gritty? Any changes to an image that is not a point to point transform, such as a 3DLut must be done with a spacial 2D filter to add speckle or any other image degradation effects. These can usually be done with a matrix kernel. Look up (web search) image transform matrices etc. to get an idea. If a more random effect is desired, by some code you might take each pixel and randomly change the RGB values by some amount, or another approach is to take the pixel and then some of the surrounding pixels along with some random function to change the pixel. Cheers Mitch 1 Link to comment Share on other sites
Amada Daro January 16, 2018 Share January 16, 2018 Thank you Mitch! Anyone knows how to apply a 3x3 image transform matrix or a function by node in Davinci? I have never bothered to apply a matrix only because I have always wanted the 'film' curve (that is not transformed in a matrix) and not primary and white point corrections. Link to comment Share on other sites
Jussi Rovanperä January 16, 2018 Share January 16, 2018 (edited) 6 minutes ago, Amada Daro said: Thank you Mitch! Anyone knows how to apply a 3x3 image transform matrix or a function by node in Davinci? I have never bothered to apply a matrix only because I have always wanted the 'film' curve (that is not transformed in a matrix) and not primary and white point corrections. You can write a matrix/function as DCTL and save that in the LUTs folder, and apply to a node. There's an example of a matrix dctl code in the Resolve manual on page 1248. Also Paul Dore has written a matrix ofx that can be found here Edited January 16, 2018 by Jussi Rovanperä 1 Link to comment Share on other sites
Amada Daro January 16, 2018 Share January 16, 2018 Thank you for being so helpful Jussi! Do you use them often, and in which situations? Link to comment Share on other sites
Jussi Rovanperä January 16, 2018 Share January 16, 2018 Not in Resolve, because the color space transform can do the transforms I need. I use matrixes in Fusion quite a bit. Link to comment Share on other sites
