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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

HI @lilCystar basICColor display after installation offers a trial licence. 14 days, it supports any display, it's just measuring screen output and building a characterisation (ICC profile) - same way the Spyder does but in a longer, more thorough, process.

When you start the basICColor display software, you'll see this licensing screen,

if you don't see it, look under the help menu/license

see above, under Purchase it says "click on 'licence' for requesting a trial licence. "

Your friend making a 5-foot canvas print without a sample test must be crazy, that’s a great way to waste money.

"Do you think evaluating your monitor's performance using online test images, such as The Lagom LCD monitor test pages is of any value? "

I don't think those charts will help you, I'd suggest viewing and assessing (as best you can without a reference) a test image (ideally a well tested composite image) and just see if the 'memory colours' such as skin tones and the greyscale 'Look" right.

Please go here and download the Adobe RGB testimage: https://www.colourmanagement.net/index.php/downloads_listing/

"On the up side, I have been making and selling vintage style clipart images for 4 years with my humble equipment and have had over 5000 sales with over 600 5-star reviews, in which more than a few have mentioned that their colors printed beautifully. This gives me a small amount of confidence. '

that’s great, it should give you confidence.

give us a link so we can see what you do please?

"Thanks for introducing me to tools I can aspire to utilizing in the future. And for advising me regarding calibration in general. I'm fortunate to have the benefit of your expertise and think it very generous of you to volunteer your time assisting those less knowledgable than yourself. Hopfully it is generating good karma and you will receive assistance from someone else if you should ever need it!"

yep good karma is always welcome, I really appreciate your thanks

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.

Hi there.

I installed basICColor display and clicked on 'license' and got the page attached below as a screenshot. It says to click 'test license' for a free trial but I do not see those words on the page.... also don't know what the warning in red means. I created and was signed into, a baslCColor account while I did this.

It was possible to convince my friend to do a test print by leaving out phrases such as 'color profile' and 'gamut display' and instead just telling him, "It might look like crap." Looking forward to seeing the print.

The Adobe RGB test page looks good on my monitor. Thanks for that.

You can see the simple graphics I've sold for years now at the shop link below. Some are retro-style AI gens I've painstakingly painted the weird AI glitches out of and enhanced, while others are scans of antique pictures that needed a lot of work. Not really 'clipart' but used in people's projects.

(My new 2nd store is selling much larger wall art image files that customers have printed as they like. Thus the recent concern with color management. I've decided to shell out some money and have a large color print made not only to test colors but also to see if edits using generative fill show their selection edges and a texture difference. These things do show in Photoshop at 100 or 200% view, but not the 'Print Size' view. Unfortunately, I cannot correct this entirely. But that's another post in itself.)

The first shop with some good reviews about printed colors is here: [Removed by moderator]

Will try the new basICColor display software if I can activate the free trial.

Cheers 🙂

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!! 🙂

Trevor.Dennis

Community Expert

@lilCystar I think a few of us would be interested in your subjective opinion in the difference between pre and post-calibration. We can see what screen you are using, but I'd be interested what you are using to calibrate it?

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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