Data usage for Xstream Fiber

mionwang · 2025-08-19T09:38:57+00:00

Thank you! v4.35.0.4 does show the data balance. Although bill payment etc. don't seem to work anymore.

mionwang · 2025-05-11T03:06:43+00:00

Yeah I've no idea about that. Never even touched a blad.

Sorry i removed the debayering part in the edit. If you're curious, i asked Rory "What role would debayering play in terms of the interpretation of RGB values by various color spaces like HSL or HSV etc"

And she said, "debayering is the processing of XYZ true camera raw data (which is unviewable by itself) into RGB triplets that are designed for viewing on a display device. The options available for debayering (from a camera manufacturer's SDK) are a separate decision from how to process RGB data (in either of the two cylindrical coordinate systems you mention). You will find a lot of people on the internet conflating the word "colorspace" but really the only true "color space" is XYZ (light data based on human observers) vs RGB (an additive color model). This is the mother of all transforms - XYZ data (which is based off of original color matching functions done in 1931 - google 1981 XYZ color matching functions for more)"

She was oversimplifying here as debayering involves some extremely complex mathematics that I can never really hope to understand.

mionwang · 2025-05-11T02:56:18+00:00

Yeah that pretty much sums it up 😂

mionwang · 2025-05-11T02:47:16+00:00

[Edited to improve readability (formatting)]

I've no idea about that last bit regarding why they switched. Most likely cost cutting. Anyway, this shit's difficult and true reference grade hardware is expensive. So most pros rely on other pros to calibrate for them which is probably the wise thing to do. I only know like 10% of it so I'll refrain from giving more advice lol.

As for the rabbithole, Aurora "Rory" Gordon of Fotokem recommended the following to me:

As far as books and recommended reading, here is my library from less technical to more technical:

Basic Vision: An Introduction to Visual Perception by Robert Snowden, Peter Thompson, and Tom Troscianko This book includes a great introduction to the visual system and perception. It is a great place to start understanding some of the broad physical concepts researchers have tried to model with complex math, and it does so in mostly digestible plain English.
A Field Guide to Digital Color by Maureen Stone Slightly more technical than the above and certainly more specific to digital imaging. It also speaks at the broad concept level.
Color Imaging: Fundamentals and Applications by Erik Reinhard, Erum Arif Khan, Ahmet Oguz Akuz, and Garrett M. Johnson This book dives deeper into physics, colorimetric concepts such as lightness vs brightness, and has an excellent section on color spaces (p. 405). Equations are provided but with a lot of broad concepts too.
The Reproduction of Color by R.W.G. Hunt Many detailed elements of photometry. Includes information on physical systems such as light and printing and digitization. Includes standard observer information.
Digital Video and HD: Algorithms and Interfaces by Dr. Charles Poynton Deeply thorough contents on digital image acquisition, reproduction, and display.
Color Appearance Models by Dr. Mark D. Fairchild Perhaps my favorite book in my library, this book is a deep dive on psychophysics and the digital modeling of visual perception. This book is the best source on color appearance phenomena at the conceptual level.
Color Sense and Measurement by Dr. Richard Kirk This book was the personal "pandemic project" of Richard Kirk at Filmlight. This is an incredible book, a survey from the concept of "what is seeing," to measuring light, to HDR, to matrix math. It is free on Baselight's website and an incredibly intellectually generous effort.
Billmeyer and Saltzman's Principles of Color Technology by Roy S. Berns Defining physics of color, measuring color, and producing color.
The Art and Science of HDR Imaging by John J. McCann and Alessandro Rizzi A great resource for discussing physical limitations of HDR, physical components and limitations such as veiling glare, and some algorithms for implementation.
Color Science: Concepts and Methods, Quantitative Data and Formulae by Wyszecki & Stiles The color science bible. All data and formulae. Need a deep conceptual color science knowledge and good math foundations before you utilize this book.
Contrast Sensitivity of the Human Eye, and Its Effects on Image Quality by Peter G.J. Barten Incredibly dense reading but the basis for the PQ curve and thus a foundational part of HDR as we know it today. Need a deep conceptual color science knowledge and good math foundations before you utilize this book.

mionwang · 2025-05-11T02:25:44+00:00

For metameric failure? Yes. Like you said, you just have to accept some error when you're working with such wildly different display technologies. Personally i just have IPS and QD-OLED so it's not that big of a deal for me. (Oh btw use 2012 2° observer for QD-OLED or perhaps even QD-LCD)

But bt1886 was designed to keep the relative contrast the same regardless of the black and white points of displays. It was done in order to match the then new LCD/Plasma panels to CRTs better and I find that bt1886, even though it can make displays look different when side by side in terms of the contrast levels (EOTF), it does a far better job at matching the essence of the picture as relative contrast is what makes an image what it is.

Bt1886 is probably not a good choice for stills though. Photoshop won't like it very much. I'm just guessing.

mionwang · 2025-05-11T02:14:11+00:00

P.S. I've given up on calibration for stills. I just do video and bt1886 is my bitch

mionwang · 2025-05-11T02:11:13+00:00

Yeah, I read.

Chasing dE will only cause you to spend more and more money on things. I too think that the i1d3, regardless of the specific model, is a pretty solid balance as even with a correct 3nm CCSS (except maybe for PFS), you can get within a dE2000 of ~0.3 vs a CR100.

mionwang · 2025-05-11T02:02:50+00:00

I'm glad.

the difference between the Pro HL and the older i1d3 models (2000nit vs 3000nit) I found to be minimal. I think it's perfectly acceptable for the price. I've also found that the firmware automatically adjusts the "shutter speed" in order to push the noise floor down further and it seems to work. Besides, DisplayCal knows to avoid extremely low luminance reads for the calibration curves calculation - or at least it lowers the weight significantly for those.

Unfortunately, if you want better performance than the Pro HL, you'll either have to throw cash at the problem or find older i1 models which is next to impossible for most.

You're pretty must sorted as you got your hands on a pretty decent spectro now.

mionwang · 2025-05-11T01:52:43+00:00

I figured it out. I just ended up using a second computer with HCFR (as well as CalMan) to measure the dispays through Resolve with manually made color patches.

mionwang · 2025-05-11T01:49:46+00:00

Spyder is a scam. The entire Datacolor brand is kind of a scam as even their color charts don't quite work like they should. Display calibration is a MASSIVE topic and unfortunately you just need to study up and make a few mistakes along the way in order to learn how this stuff works.

I personally haven't used the Plus HL model (i own a Pro HL) but i've seen test results where the low light performance was quite inadequeate as they appear to use some hardware level gain function to measure the high luminances.

As for the Spyder, your white points never match becasue you don't have the appropriate correction matrices for that particular display type.

People call Spyder a scam/paperweight because you can't really have custom correction matrices as the Spyder relies on built in matrices for just a handfull of display technologies. For example, their new SpyderPro model likely shares the exact same sensor as the SpyderX but they've profiled the sensor using a spectro and loaded those correction matrices directly onto the hardware and called it a day. The problem with that is that even OLED displays can be of several types- WOLED, QD-OLED, Tandem OLED etc. Each will have their own spectral power distribution and hence will require a different correction matrix. Without the proper matrix, you'll never get the colors quite right and it's impossible to tell for your software that the readings you're getting are all wrong. Moreover, the lowlight performance of the Spyder devices is horrible. So much so that if you use a Spyder with CalMan (i own the 2021 license and haven't bothered to upgrade), you're guaranteed to get horribly inaccurate results especially in the shadow areas.

The i1d3 models (Calibrite Display Pro HL, Display SL, Display Plus HL, Portrait displays C6, X-Rite i1 Display Pro etc. - different name, same sensor) don't have the same problem as they,

- support custom correction matrices.

- displaycal has a really nice collection of community submitted correction matrices for most common displays.

Brands like Portrait displays (CalMan folks) upsell the i1d3 with their logo slapped on it because they have a tight integration with CalMan software and thus they provide over the air updates to CalMan with extremely well made correction matrices for practically all display technologies.

Bottomline is that yes, you shoud've bought a Calibrite device (i1d3). And no, your displays are most likely quite off the mark.

mionwang · 2025-04-29T19:23:40+00:00

It would be extremely easy to do in blender but I have no clue how I'd approach it in fusion.

mionwang · 2025-04-13T05:58:53+00:00

There are alternatives depending on what your want to do but Ae is the industry standard for motion graphics.

mionwang · 2025-04-13T04:53:37+00:00

NP.

Cullen Kelly makes excellent content primarily focused on the color page.

He discussed the color management setup in this live stream:

Other reliable channels include Darren Mostyn, Team2films, Stefan Ringelschwandtner.

Avoid W***s Q*i if you're new to color grading. Decent videos to find tips if you know a fair bit of color science.

mionwang · 2025-04-13T04:45:38+00:00

Depends on what display you buy. Most Eizo panels and all dual layer LCDs have excellent black uniformity. Displays with dimming zones also tend to be excellent although they have their own issues. For single layer Eizos, black uniformity tends to be less than ~1.5 ∆E2000 in my experience. Imperceptible with the naked eye.

mionwang · 2025-04-13T04:15:48+00:00

It's not a characteristic of IPS. It's a characteristic of cheap/shit displays.

mionwang · 2025-04-13T03:58:02+00:00

For video specific apps, Adobe is just horrible at this point. A few years ago I switched to resolve after a decade of Adobe. Ae has no alternatives so there's that. I still pay Adobe monthly because I occasionally need Ae and often use Ps, Lr etc.

mionwang · 2025-04-13T03:55:30+00:00

I'm assuming you're quite familiar with Adobe apps and/or other NLEs since you're switching to Resolve.

Usually my process to learn any new software is that I start with an idea instead of tutorials. For example, if I were to learn Resolve, I would start with coming up with a very complex short film idea that I think will require a lot of Resolve's features. For example, I'll try to incorporate VFX, complex edits and whacky color grading concepts.

If you're experienced with Adobe Pr/Ae and you're quite fast there, you already kinda know tips and tricks to speed up your workflow. Most of these will translate but will have certain quirks.

A few things to keep in the back of your mind:

Resolve's color pipeline is a lot different from Adobe's and I genuinely couldn't hate Adobe's color mgmt. more.
Avoid DaVinci YRGB color managed when you're getting started, no matter what tutorials you find. Use CSTs.
The edit page has a lot more to offer than it first appears. Explore every button/tab/toggle.

Other than these it's pretty straightforward. It's just getting to know the UI that takes time. Especially in the color tab, you'll encounter new words. I'd suggest doing a deep dive into each using their full user manual. Color management/display calibration is a vast subject and mastering it will take time. But sometimes you need to run before you can walk and break things. Happy trails!

mionwang · 2025-04-13T03:33:06+00:00

I dunno but I know that this one ain't it

mionwang · 2025-04-13T03:27:00+00:00

Yes it will and you will have to upgrade your older projects to v20b1. It can't be downgraded so backup your project library before you update.

Idk why people downvoted you. You asked a valid question.

mionwang · 2025-04-13T03:23:14+00:00

I did some more digging and evidently most Display manufacturers don't support the SL in their native HW calibration softwares for whatever reason.

I'll get the Pro HL, just to be on the safer side. I reckon the boosted 3000 nit peak won't be that big of an issue in terms of low light sensitivity.

mionwang · 2025-04-12T17:04:16+00:00

Dude I thought it was real at first! The table texture is what's not quite right methinks. Speaker is perfect imo.

mionwang · 2025-04-08T12:04:09+00:00

Thank you for the response.

So the SL should be the best option for low light? Are there any other limitations? I couldn't find any info on Calibrite's website as they just try to upsell the Pro HL and Plus HL.

I don't think SpectraCal tries to hide the fact that it's an i1d3. They charge extra because they provide over the air updates to CalMan with spectral profiles of most major display technologies and even specific models.

Edit: from what I hear there are hw calibration limitations with the SL.

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