What is the truth about file handling of XMP as Develop Presets and Camera Profiles ?

Question

Hello everyone,I am so confused about the way Adobe co-ordinate the workflow between camera raw filter and lightroom.I have so many questions to Adobe, but this one is the most confusing to me.-I understand that a preset in lightroom is represented in a metadata file format of  "xmp"-Also an exported profile from adobe camera raw is a metadata "xmp"What is the difference between them?I've seen a couple of videos and read a few articles but I can clearly say that the authors have no idea what are they talking about, this is my understanding of the whole image idk if its right or wrong: -In lightroom, the presets contains the image state setting with all its subsets (Basic, effects,...etc)and I call this "xmp" type_1 its kind of limited comparing to type 2. -In photoshop (which can also create a preset), in Camera RAW when creating a camera raw profile (which requires a secret key, Alt+ New Preset, god only knows why) this profile contains Image state + more advanced options, the most important option among them is adding a LUT, which in my opinion is the main essential difference between the Developing Presests and Profiles, profiles can be based on a LUTs, this Profile with these more advanced options makes the "xmp" type_2, which is accordingly has a size bigger than the type 1 (for ex: if type1 may be 1~4 KBs, Type 2 would be 100~400 KBs).So, when you open the camera Profile into Lightroom which unbelievably doesn't support LUTs, the program apply it as a starting point, it sets the image colors to the LUT info created in the "xmp" type_2 if existed and from this point you can move forward edting your image, but you can't go backward as it doesn't support the other "advanced features" in the Profile "xmp".I'm I getting this right? if not then would someone please explain the difference between them to me?and if I'm right, then why can't Adobe makes Lightroom support LUTs and make one global "XMP" file that contains all the data from type_1 and type_2, I hope this is not a Confusion from adobe like the previous lrtemplate extension which ended up to be a xmp file in the end, then why didn't you create it as xmp file from the beginning.Thank you.

Ahmed Ateek · Accepted Answer

Hi Ian,Thank you for providing me the right sources of information, I've watched the first video on its release day but wasn't much of a help, the speaker summed it all up in a line at the end of the video saying " Profiles can help you either establish a neutral starting point or apply creative effects to your images", but I found my complete answer in the second link; that article by Josh Haftel.In the second section he says:What are Profiles? "In photography and digital imaging, the term “profile” can mean many different things.Within ACR and Lightroom, a profile is used to render your photograph, converting it from raw camera information into the colors and tones that we see."So that make sense, as they are created in the first place for RAW photos to help the users getting their raw photos to the starting point, say I am a photographer and I shot a wedding with my color checker in RAW format, then I import my photos into Lr or Ps and then create a color correction/WB profile for my camera (Even for this specific shot session) and apply it to all my photos to give them all equal starting point, then start my color grading or any other developing effects."For raw photographs, we build profiles for nearly every camera make and model we support.Our profiles incorporate deep imaging science and take into consideration the colors of the filters used on top of the sensors."But what about JPEGs these are already processed and compressed photos, would it make sense to use profiles on them? Josh says that this would be just a creative editing,by applying a profile to your JPEG photo you're starting the image with an already made effect look, then stacking more effects from the developing menus, Also the speaker in the first video said it at the end "apply creative effects to your images", basically they are saying though it's a tool made for RAW photos, you already have the tool so release your creativity and do what ever you wanna do."For non-raw photographs (like JPEGs and TIFFs), a profile isn’t needed to render the photo, as all of the rendering was done already (either in another raw processor or within the camera itself). However, profiles can be used for creative purposes to change the look and feel of the photo."I can say that this is a convenient answer based on a real knowledge and accurate informations from Josh, it even explains why profiles can support LUTs, as some software exports camera profiles (either using color checker or not) as a LUT like 3D LUT Creator. So that's Basically the difference between Develop Presets (which is made for color grading and effects, the last step in editing an image) and the Camera RAW Profiles (whic is made for the proccessing your RAW photo out of the camera sensor into a starting point or a color corrected image, the first step in editing an image, which your can do further color grading or editing to using the developing presets) and using a profile on jpeg or any other proccessed image would be just like a game of playing creative edits or a work around to get your LUTs into Lightroom, which is really sth ridiculous that Adobe Lr in 2021 still doesn't support LUTs in a direct way, maybe that's sth they may add in the futur also with a simpler way to add older format presets into Lr.In the end I would like to thank everyone who replied to my topic especially Ian, and I have to say that there is a lot of youtubers and creators out there who made videos about the difference between Develop Presets and Profiles who clearly has no clue what they're talking about. so always check if any information you're getting is correct or not.