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Determing Bit Depth of My Monitor Prior to Professional Calibration - Windows Says Two Depths...?

Forum|Forum|1 year ago
June 28, 2024
3 답변들
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Hi All,

I'm about to buy a pre-owned calibration device to use with DisplayCAL free software. To use DisplayCAL it says you must have: “True color” 24 bits per pixel or higher graphics output. In Windows 11, Display Settings/Advanced Display/ it lists my main monitor as "8bit" (see screenshot). But when I click on"Display Adaptor Properties for Display 2" (my main display, attached to my laptop) and then click 'List All Modes", the mode that is highlighted by default says: "1920x1080 True Color 32 bit 60 Hertz" (also in screenshot) [Btw, I can't use the NVIDIA control panel, it says I am not using a display attached to an NVIDIA GPU.]

Can someone please tell me if I meet the system required bit depth to use DisplayCAL or not?

Any replies genuinely appreciated?

이 주제는 답변이 닫혔습니다.

최고의 답변: Conrad_C

When DisplayCAL wants 24 bits, it means they want:

8-bit Red channel

8-bit Green channel

8-bit Blue channel

8 + 8 + 8 = 24 bits

…the mode that is highlighted by default says: "1920x1080 True Color 32 bit…
By @lilCystar

32 bit means it does 24 bits RGB (meeting the DisplayCAL requirements, as practically all current displays do), plus an 8-bit alpha channel that the graphics hardware can use to do transparency effects. This 32-bit spec is also very common now.

So, 24 + 8 = 32 bits.

By the way, in the background of your screen shot, the Display Information says 8-bit. That is not wrong, because it’s talking about bits per channel. The other spec is talking about total bits in all channels. This is often a source of confusion, but it’s important to understand both the 8-bit and 32-bit numbers are true, as long as you understand how many channels each bit depth number refers to.

L

Lumigraphics

Legend

If I were in your position, I would put out a request locally (Facebook groups, and anyone you know in the industry) to borrow a hardware calibration device for long enough to properly profile your display. This isn't a perfect solution but its better than wasting your money on a device that doesn't work.

NB, colourmanagement

Community Expert

@Lumigraphics good suggestion, that’s a nice idea for an under-resourced user

If she uses DisplayCal or basICColor display @lilCystar would not be violating the device manufacturer's software user agreement, either. They normally mandate that a user of the OEM software should own their instrument.

I'd call, by and do it for her to help out if she were near me in the UK.

I hope this helps
neil barstow, colourmanagement net - adobe forum volunteer - co-author: 'getting colour right'
google me "neil barstow colourmanagement" for lots of free articles on colour management
Help others by clicking "Correct Answer" if the question is answered.
Found the answer elsewhere? Share it here. "Upvote" is for useful posts.

L

lilCystar작성자

Known Participant

Thank you all for the helpful suggestions and general info. I purchased a Datacolor Spyder 5 Express, pre-owned, on E-bay. Should get to me in a couple of weeks. Hopefully it does the trick. I really appreciate all the guidance!

Conrad_C

답변

Community Expert

When DisplayCAL wants 24 bits, it means they want:

8-bit Red channel

8-bit Green channel

8-bit Blue channel

8 + 8 + 8 = 24 bits

…the mode that is highlighted by default says: "1920x1080 True Color 32 bit…
By @lilCystar

32 bit means it does 24 bits RGB (meeting the DisplayCAL requirements, as practically all current displays do), plus an 8-bit alpha channel that the graphics hardware can use to do transparency effects. This 32-bit spec is also very common now.

So, 24 + 8 = 32 bits.

By the way, in the background of your screen shot, the Display Information says 8-bit. That is not wrong, because it’s talking about bits per channel. The other spec is talking about total bits in all channels. This is often a source of confusion, but it’s important to understand both the 8-bit and 32-bit numbers are true, as long as you understand how many channels each bit depth number refers to.

L

lilCystar작성자

Known Participant

Ah... One is talking about bits per channel and the other about the total bits of all channels. It could be clearer in Windows... Glad to understand it now. Looking forward to calibrating my monitor.

Thanks so much for explaining!! 🙂

L

lilCystar작성자

Known Participant

If Spyder 2 wasn't a typo, you can't use it on a modern monitor. The Spyder 2 is an ancient antiquity by now, and even back then it had a pretty bad reputation for being inaccurate and inconsistent.

The first Spyder model to work with LED and wide gamut displays was the Spyder 3 - but even that was way back in 2008 or so.... It also had a makeover at that time to improve the frequently reported quality issues, and apparently it got much better. Spyder still struggles with a bad reputation, but I think they're pretty good now.

However, the best one on the market is the one previously known as i1 Display Pro, now rebranded and sold as Calibrite Display Pro. B+H sells it for $279, and it's a no-brainer. It comes with software, but it's supported everywhere and worth it just for the sensor alone.

Hey there, This is very disappointing to hear, as I have already purchased the Spyder2. I'm on a disability pension, with a small p/t job, and am poor as a church mouse. No way I can afford what you recommended. If you are 100% certain the Spyder2 will not work on my monitor (Acer H200SQL) then I can borrow the money to buy a pre-owned Spyder3 - you said it was improved and will do wide gamut displays - but I'd be really scraping financially. (The Spyders seem to be what is widely available, used, for sale online.)

So.. are you certain the 2 will not work?

And will a 3 be an improvement over nothing?

(I have started a small online business selling my digital artwork as image files buyers print themselves, however they envision. The works go up to 36" wide in size. I want to make sure the colors print close to what I see on my monitors... thought this was a solution I could afford, but apparently not...)

Thank you for your input!

D Fosse

Community Expert

8 bits x 3 channels = 24 bits.

Any monitor today satisfies this, at least formally. TN panels are natively 6 bits per channel, but add the last two bits through temporal dithering (rapid flashing). VA and IPS panels are 8 bits natively.

More expensive monitors for graphic and photographic use are often 10 bits per channel = 30 bits total.

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