I found one picture in AdobeRGB profile.
http://www.rpsdig-thamesvalley.org.uk/Images/MMcN_Technical%20Target07FOGRA.jpg
Try confront this picture in your web browser and software. Do you see all numbers ?

What numbers? I see no numbersbut I see some sensor dust on the top right of the white hat...

You must click on picture (zoom)
Numbers are in left top corner : 5 - 40 (shadows) and on the right from this lady in white hat 236 - 255 (lights).

Interesting Cheron yes I see the numbers but not all of them in the top left I can see 3 on the right of the string of numbers & just make out one more but thats it & in the light numbers I can make out the bottom 6 numbers. I can see more of the numbers in shadow if I look from the left of my monitor & increase the brightness this sort works with the lighter numbers. So come on then what is this telling us?

For the 'light numbers' I can see 255 (obviously), 252 (only because I know there's a number there and I have to strain), 250, 248 etc. For the 'dark numbers' I can see 25, 30, 35, 40. From this I'm inferring that my black point is a bit on the dodgy side, but the white reasonably ok. Am I correct in that?

-Lee

Since viewing this, I've attempted to recalibrate my (crappy, LCD) monitor. The only way I can see any number below 25 results in my pure blacks being about mid-grey. I think my monitor is now about as close as I can get it to perfect. Not to say it's anywhere near perfect, but I don't think it's possible to get it much better.

How many of those numbers are we supposed to be able to see? I've assumed all of them.

-Lee

No, i don"t see all numbers.
-pure Black: I start to see something at 15
-pure White: 252 is the first number i can read.
Must we see all number s to have a perfect calibrated screen?

It's telling you nothing special, but in the best case you see everything. These "number tests" are nice to show you how good for display works in fine graduations - In my eyes it's important for a good and clean processing to have be able to see fine graduations. If you have a bad display perhaps you edit it and print or show here and get the bad result to see things you didn't see before, especially in these grey areas something like this happens often.
When I changed my display from "crap" to "good" i really had to reprocess some pictures.

I miss only one number, the one below the 255 -
Perhaps cause I have a NOT calibrated screen. I don't take so much care about calibration, cause that's especially something for your place and is not what others see. This is an endless discussion but in my eyes this is more important in commercial stuff or if it's absolutely important to get the perfect fitting result in display and printing, but I never had problems with that, the difference was minimal.


That's typical for a TN panel so I think you have on. They are less expensive and faster (good for gamers) but for picture processing you should use a IPS / PVA panel.

Nice test. My display (uncalibrated HP laptop with sRGB profile) reaches between 15 and 250. All colour tones are distinguishable.

brose

http://www.brosepix.com

Thanks for the text:-)

I nearly can see the 5 in the dark, also for the 254 in the light... this on a 5 years old Apple Cinema Display 23", who isn't in parfait conditions any more. I hope it will still work for couple of years.

This has turned out to be a very revealing thread!

I was concerned at not be able to view all these numbers as I had done so much in the past to achieve a calibrated monitor I on reading this I felt somewhat cheated & perplexed.

So I decided to do a new calibration with my color munkie & it threw up some interesting issues & finally results. First of all going through the process of calibrating the Mac display was not so easy it took a number of attempts. There is no contrast adjustment via the keyboard only a brightness adjustment. This was confusing at first but in the end the brightness was turned right down. After completing a the third calibration I returned to the colour test card. I can now read 10-40 in the dark string & 252 thro 236 on the light string though 252 is feint.

Coming into 1x is very revealing! The tonal palette is completely different I can see a marked degree of difference in just the forum pages seeing 3-4 greys that were less obvious before. And then looking at my own images was a shock. My weary traveller has to go! its awful. On the orginal I couldn't see the sign in the lower left corner since I thought I had burnt this area out!


And this explains some dialogue I had with one of our members about this same sign.

I am still though not absolutely sure that I have this perfect may never get that of course & of course I do not have the ultimate monitor in the iMac screen there are better out there but I think that I have moved one step closer to getting the optimum output I need now to create a profile calibration monitor to printer & then just maybe I will be able to get the prints I have been yearning from my R2400 that has been sitting idele for most of its life in my hands!

Watch this space what I do know is that I am much happier so thanks Cheron you have unwittingly put me onto the issue that has been bugging me for ages. Colour matching is a tricky business I spent many hours while at Ford buying coloured painted parts that had to go through a rigourous colour matching processto the master body colours that I can tell you was an incredibly painstaking & painful process. Its coming back to haunt me as I write these words!

I hope I have helped others in this little piece!

I can just make out 5 in the dark bit and 252 quite clearly in the light bit. No hint of 254 though. . . hmm. . . on an i1 calibrated formac raven 19" so not a special monitor by any means.

I saw the mac 32" cinema display in the apple store today and wow it looks amazing. . . a mere 900 pounds though. . ;-(
Jon

Hi Gerard,
I read somewhere, that the monitor of an iMac is difficult to calibrate with a Spyder or i1, because there's a glass in front of the monitor.
It seems that the calibrating result was no perfect, due to that.

There should be no problem with Apple Cinema Displays, but many mac user complain about the brilliant surface of the new displays.
I hope my 23" Apple cinema display lives long enough, till they decides for a mat surface of the new ones, like the have an option with the 15" MacBook Pro.

Ben maybe one day I will move to a dual monitor system who knows. But I can now say after writing the above I am now getting prints that match what I am looking at on the screen which is a major advance. Now I might start printing framing and hanging my work in the bathroom! ;))

Hi,


I am not sure, if this exercise is of any use. Many Browsers and other software are not able to use colour profiles properly. The standard for distributing images via the web is still sRGB.

So please be sure, that the software you use to display the image in the link is really capable for the image colour profile settings (I have not checked the image, if it is really Adobe RGB). Only if the software is suitable you should start to calibrate your screen.

/Stephan

Indeed Gerard that's the most important... success:-)

If you want still more control, just load down the ICC profile from the photo-paper and select it in the printer menu.
In Belgium there's a man who make the ICC profile, for any ink or photo-paper : 5 Euro.