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Retouching with LUTs
After a recent discussion I have been getting quite a few questions about working with LUTs, so I decided to sort out the answers in a short article: https://www.facebook.com/notes/anchevne … 0927891898 If anyone has additional questions feel free to ask. Feb 07 17 10:41 am Link thanks for the informative write up in FB. I bought 3Dlut when it first came out from Oleg but did not use it as I find the tutorials a bit hard to comprehend and more structured to videos. I do occasionally use the color lookup adjustment and then adjust it's opacity as a starting point. Feb 07 17 06:06 pm Link woofw wrote: They are not video oriented but the very subject of twisting and shaping the 3D color space is not really simple to put into words. I also feel a big difficulty in explaining the whole matter, especially when people are so used to tools which really don't need any understanding of color space. We should thank Adobe for making more and more people just operators of "smart" tools. Feb 08 17 02:26 am Link I think would be great if Photoshop started building more tools with a LUT-editor-esque back-end. Imagine being able to click on the red of a dress, and simply drag up/down/left/right to perfectly cleanly remap Hue/Saturation at the level of the colour space. Or being able to click on skin, and have a simple Uniformity slider. Feb 08 17 09:05 am Link Benski wrote: Be awesome Feb 08 17 09:47 am Link Thanks George for the effort and info. Nice work. We all need more education and orientation to this "newer to photography" tool. LUT's have long been widely used in the video and most of the TV and movies we look at today. How to use "Color Look Up Tables" effectively in Photoshop and photography is certainly a new craft for many of us. I agree with the poster above that Adobe could create and promote some additional LUT creation and manipulation tools within Photoshop. Its an area that would show that they continue to enhance and create new value in the updates that Photoshop is supposed to provide on an ongoing basis. As a retoucher and trainer... there hasnt been too much NEW in terms of updates to Photoshop that really adds a lot of value to our "retouching type of work". This LUT technology may be a nice future tool from Photoshop that we could strongly use in our own still color manipulation work... like with hair coloring, skin toning and harmonization, makeup application, fashion color, mood creation, and attractive and highly artistic editorial looks. Bring it on! So, for me... go ahead and break my head with new tools and capabilities... and new things to learn that are relevant to what we do. It is admittedly a tough study though... but one that looks to be very visually powerful for all of us still life colorists. Feb 08 17 10:26 am Link Film colour grading is where I've used LUTs, but in film they're usually just used to match camera footage from two different sources, or turn a complex colour process into a simple file you can pop in a camera and see how your grading's going to look. Creative colour work's still done with colour wheels/curves and mask-based selective processes. I'd actually hope someone other than Photoshop implements these kinds of tools, as I refuse to start paying a subscription to Adobe .. Just bought Clip Studio Paint the other day ($50 line/vector-based painting tool used by most the Japanese manga industry) and it's such a great piece of software .. What it does, it does 1000x better than Photoshop .. I think there's a lot of room for someone to come along and usurp the big guys. Feb 08 17 11:59 am Link Benski wrote: Everyone is free to do whatever one likes. Personally I like optimized and flexible workflows and I don't see anything creative in using 20 layers and 1-2GB files when the exact same thing can be done with 2 layers. It's a waste of time and resources. Feb 09 17 12:24 am Link If I put the LUT "Retouching-with-luts-1-prophoto" in Luminosity mode, it's perfect. Thanks Feb 09 17 08:27 pm Link Mouricz wrote: It may produce a certain effect which you like for a particular image but the right thing to do is to use LUTs in normal mode. Feb 10 17 12:15 am Link It's a faster way to do do overall adjustments. It doesn't replace masking, it doesn't replace clean up and it doesn't replace DNB. So, is it really that faster for an experienced retoucher? No. Feb 10 17 06:06 am Link 2thestudio - Ivan wrote: Nobody claims LUTs are a replacement for local adjustments or that it will make this part of the workflow magically faster. Read the first sentence and the last paragraph of the article. Feb 10 17 06:26 am Link anchev wrote: Show me a workflow of 3 layers with no masks that can be applied on any image? You can't work on a professional level without masks. DNB using curves is essentially masking. Feb 10 17 09:58 am Link 2thestudio - Ivan wrote: My working files are 2-4 layers maximum and I don't keep any masks. I cannot "show you" a workflow here because many years of work and optimization cannot be summarized in a forum post. Plus it will be 1) off-topic and 2) would raise many additional questions which would need 150 pages if I need to answer them. So let's leave this for another time. Feb 10 17 11:20 am Link 2thestudio - Ivan wrote: It does replace masking. LUT masking is much cleaner and faster. And it can mask things PS can't even get close. Feb 10 17 03:50 pm Link Tulack wrote: Yes but only if the masking can be related to the image data itself, i.e. if the mask value is a function of the RGB values in the image. For that LUTs are more powerful than masks created through selections. However a LUT cannot create a mask which is created as a selection independent of image data. It is simply not aimed to do that. Feb 10 17 04:07 pm Link anchev wrote: I mean in a colour-grading suite .. If you've got a director telling you 'Take the magenta out of the skintones', 'Make the light in the door yellow', it's very quick with selections and colour-wheels, and more intuitive (especially working with other people) than a spiderweb of colour remapping points. Feb 12 17 09:14 pm Link Benski wrote: I am not sure what you are comparing or objecting to, on what basis and for what purpose. You are talking about creative color work implying that using particular tools is the way to it. Now you are backing this up with speed, intuition, directors, team work. Feb 13 17 01:56 am Link |