X-Rite i1 Profiler
and i1 Solutions

Simon Baker, 13 April 2011

 

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In January we reviewed X-rite's high end i1 Pro spectrophotometer calibration device. At the time there were a few different packages which offered varying features depending on the type of devices you wanted to profile and calibrate, and ultimately how much money you wanted to spend. For our purposes we tested the device for display calibration and tested the i1 Pro with X-rites own i1 Match software and some other popular software packages from other companies.

The device itself is a high end industry reference spectrophotometer so we already know that it is of a very high standard. At the time we reviewed the product we talked about the forthcoming release of new packages from X-rite which will incorporate the i1 Pro. We also discussed the new software which would be released at the same time which would replace their i1 Match package. These solutions have now been released in three versions. All are compatible with several new software packages from X-rite, including the package we will test here which is called i1 Profiler.

 


i1 Solutions

From X-rite's website, here is a summary of the features of each different i1 solution:

1Basic Pro is an affordable, professional spectral color measurement solution that�s easy to use, and includes everything you need to create professional, custom ICC profiles for your monitors. It also includes Pantone Color Manager for managing digital color libraries and color picking, and, is easily upgradeable anytime to complete workflow functionality with i1Publish Upgrade. Includes i1Pro spectrophotometer ( MORE ).
 

i1Photo Pro is specifically designed for discerning photo professionals to manage their RGB workflow from camera to display and projector to print. The included i1Profiler software delivers high quality color results that especially target highlight and shadow details and delivers greater color accuracy for more neutral grays and natural skin tones. Includes i1Pro spectrophotometer ( MORE ).
 

i1Publish Pro is the ultimate, fully-featured ICC profiling solutions for prepress and imaging professionals that need to organize and manage their complete RGB, CMYK and CMYK+N (CMYK plus any 4) prepress workflows, complete with and quality check verification functions. Includes i1Pro spectrophotometer ( MORE ).
 

 

So all packages come with the i1 Pro device itself, but have varying levels of support for projectors and printers. For our purposes here we are only interested in the display calibration which is supported in all three packages. A summary table of supported features is shown on X-rite's website here. Pricing will of course vary, please refer to X-rite's website for more information about them all.

The i1 Basic Pro package is adequate for our needs therefore and comes in a similar package to the i1 Extreme we had been sent before to use in our i1 Pro review.

i1Basic Pro includes: i1Pro spectrophotometer (measurement device); ambient light measurement head; monitor holder; positioning target; scanning ruler; backup board; i1Publish Software: i1Profiler v1.x software for monitors and Pantone Color Manager; soft-sided storage case.

The i1 Pro device itself remains unchanged so I will not repeat what we have already discussed in our full review. The purposes of this review is to really test their new software package provided for display profiling, which is called i1 Profiler.


i1Profiler Software

X-rite's website states: "With the new i1Profiler software, X-Rite has developed a next generation toolset that combines the best features of its i1Match, ProfileMaker and MonacoPROFILER solutions. i1Profiler software offers an unprecedented level of flexibility to address the needs of digital imaging workflows. It features a number of unique color management capabilities, adding to users� power and control in creating professional quality profiles. Users can chose between a �basic�, wizard-driven interface; or an �advanced�, user-driven interface to create high quality, precise, custom color profiles for monitors, projectors, printers, and presses (device support dependent upon product purchased)."

For those wanting to calibrate printers there are further features of course which we will not be testing here: "At the core of i1Profiler is X-Rite�s i1Prism engine, whose unique profiling technology lets users build printer profiles for up to 8-color workflows (RGB, CMYK and CMYK plus any 4). This reliable, intelligent iterative technology is extremely robust, allowing for further profile optimization based on any combination of images, spot colors or captured colors, resulting in the best possible image quality and color accuracy. Users can select from any of the included Pantone color libraries, including the new Pantone Plus Series. Users can further adapt their profiles to specific ambient light conditions, compensate for optical brighteners in their papers (with an i1iSis), and utilize simple yet advanced controls for black separation. i1Profiler lets users save and re-use assets or preferred settings with drag-and-drop functionality - meaning profile generation workflows can be created or shared with others quickly, easily, and efficiently. This exchange functionality also allows users to communicate palette information and other color data across the office or around the world using X-Rite�s Color Exchange Format (CxF) for the most comprehensive digital color data exchange."

  

From a display point of view, the included i1Profiler software features basic and advanced modes for calibrating and profiling your monitors. The following is taken from X-rite's website:

  • Display true colors on each of your LCD, CRT and laptop monitors in basic or advanced mode

  • Create profiles for any ambient light condition for optimal viewing for color critical work

  • Unlimited gamma white point and luminance settings including native gamma and measure luminance as target

  • Workgroup match utilizing reference profiles to match all monitors

  • Gray balance optimization for more neutral and better defined grays, in any lighting condition

  • Chromatic adaptation formula for a closer visual match of different monitors (or of different settings on one monitor) with different white points

  • Preview before and after results with supplied image or your own

  • Monitor Quality Assurance � validate and trend monitor performance

  • Profile summary report ideal for post profile analysis

  • Automatic Display Calibration (ADC) support for leading industry monitors (with support)

  • Profile reminder to ensure true and reliable color over time

When installing i1 Profiler you are also offered the additional Pantone Color Manager and ColorChecker passport software packages but those are really for printer profiling and testing.

 


Profile Creation and Calibration Process

When the i1 Profiler software is loaded you are presented with the above summary screen. The left hand section of the screen allows you to choose the type of device you are profiling, in our case we are only testing the software with a display. The right hand side of the screen has some further settings. I have zoomed in on this below.

You can select between the 'basic' and 'advanced' calibration modes here. The section below confirms which version of the software you have, whether that is basic, photo or publish. It will then tell you which options and settings you have access to. In the i1 Basic Pro package you can carry out the monitor profiling and tests and those are shown with a green tick as you can see above. You can also upgrade your license within the software and check for any software updates. We are testing v1.0.0 of the software which was released at launch.

I selected 'Display profiling' from the left hand side of the screen to begin the process, first of all leaving it in the basic mode.

 


Basic Mode Profiling

I will begin by walking through the 'basic' profiling wizard. Once you have entered the display profiling section the left hand part of the software acts as a help window, giving you some information about many of the options as you select them. The bottom section of the screen shows your workflow diagram, showing you the steps in the calibration which will be performed to create a new profile. This is initially highlighted on 'display settings' as shown above. In the basic wizard you are presented with the options to define your target white point and luminance. By default the software is set at D65 (6500k) and 120 cd/m2 which are the targets we use in our reviews. You can also set white point to D50 which is commonly used in pre-press, or 'native' which will retain your monitors native white point if you have set it by some other method and do not want to change it. Again the luminance target can be changed depending on your ambient lighting conditions and preferences.

On a side note, if you have more than one screen connected then the software gives you an option to choose which display you want to profile.

You can progress onto the next section by pressing either the 'next' button or just clicking on the next step in the process at the bottom.

The next section is the 'measurement' section. You are asked to connect and calibrate your i1 Pro spectrophotometer, something we were used to from other software packages as well. This calibrates the device itself to a white reference point on the tile provided. You are also presented with two further options. The first you can tick if your display is capable of automatic display control (ADC). This is a feature available on some higher end screens, for instance the NEC PA series where hardware level calibration is possible. You are also presented with an option to allow you to change the brightness and contrast settings from your screens OSD during the process if you have them available. This will help guide you to obtaining the optimum contrast and brightness hardware settings before the profiling is carried out.

Once you have calibrated the i1 Pro device the software confirms the device is ready. On the right hand side you are presented with a colour tile range which shows you the colours which are going to be tested during the process. You can begin the calibration / profiling process from here by pressing 'start measurement'.

The software then reverts to full screen and asks you to position your device in the middle. If you have selected manual contrast and brightness adjustment you are first guided through this process. For instance above is the adjustment of the brightness setting. The screen measures the current luminance against the target you have previously defined. The quality indicator bar guides you to obtaining the optimum setting as you adjust your monitors brightness control up or down. This is very simple to follow and works well. It is a shame that there is not another section which guides you to obtain the optimum RGB levels if you have access to those via the OSD menu. That is something missing from the i1 Profiler process.

You then press next which enters you into the automated stage of the process. The software flashes many different colours and shades in front of the device and the whole process takes about 1 min 42 seconds to complete.

At the end of the process you are taken back to the 'measurement' screen. Here the colour tiles have changed slightly to show you a before and after visual view. The upper left section of each tile is the expected value, and the lower right hand section is the measured value. There's no further information given though, just this fairly basic visual guide.

If you press 'next' or just click the 'ICC profile' step at the bottom you are prompted to name and save the profile you have just created. You can also make it active at a system level, not just for the current active user if you want.

After this you are presented with some basic validation options on the right hand side. The first one is shown above and this is a 3D visualisation of the screens colour space. You can drag and drop to move this around if you wish to view from different angles.

The second part of this basic validation shows you the gamma curves of the calibrated screen. There isn't much offered in the way of explanation to any of these features though. Referring to the X-rite training videos confirms that this graph shows what adjustments have been made to the graphics card LUT in order to help meet the defined calibration targets.

The last part presents you with a drop down selection of images. You can then tick the before or after radio buttons to view and compare visually. This is designed to help you evaluate your monitors colours. There are lots of different images available designed to test different colours and shades and show what difference the profile and calibration has made. These are really the only evaluation stages offered after the initial calibration. Nothing particularly scientific but a decent range of visual tests I suppose. These are  not really very good in terms of verifying your calibration success though so we will need something a little more detailed from the softwares other sections.

A video walk through of this basic calibration process for displays is available in X-rite's training videos

 


Advanced Mode profiling

I returned the main screen and this time selected the advanced mode for profiling. Entering the display profiling option now gives you a wider selection of configurable options. This process will also give you access to the 'Display QA' tool for some more detailed validation of the process. In this mode you must click on the relevant step at the bottom to define your settings and carry out the profiling.

On the first screen you are again asked to define your target white point and luminance. You are also able to now define your target contrast ratio, although leaving it on 'native' will aim for the highest possible which is what we want to do here.

Clicking the 'profile settings' step at the bottom gives you some further options to change if you like. There are various different chromatic adapations available, with the default being 'Bradford'. You can choose between ICC profile v2 or v4 and also define your target tonal response curve (i.e. gamma). We have stuck with the default Bradford adaption, ICC profile v4 and 2.2 gamma here.

From here the rest of the process is as before. You can manually change your OSD brightness and contrast settings if you selected that option, and then the automated calibration is carried out. Again this takes around 1 min 42 seconds in this advanced mode. You can then save the profile and carry out the basic validation steps we looked at before in the 'basic' mode.

 


Display Quality Assurance (Display QA)

This advanced mode also gives you access to the more in depth 'Display QA' feature. This is accessed by pressing the small arrow in the lower section after the ICC profile step (as shown in the images above). It can also be accessed from the main home screen of the software if you are in advanced mode. The 'Display QA' option is available from the left hand menu. This is used to determine how well your display is reproducing colours after the profiling has taken place.

You are first presented with the above screen which doesnt really do anything or offer you any information other than to confirm on currently active profile. On the right hand side there is a set of colours shown based on the Munsell ColorChecker target. These are the shades and colours which will be checked during the validation. You have to click the 'measurement' step at the bottom of the screen to progress to the next stage.

Here you are asked to calibrate the i1 Pro device as before using the provided white tile. There is then a button on the right hand side to 'start measurement'. You are prompted to hang the device on the screen again. The software flashes a series of colours and shades in front of the device and the i1 Pro records the difference between the colour displayed, and the value being requested from the reference Color Checker targets. This whole process takes around 30 seconds to complete.

At the end you are presented with the same tile graphics as shown above. The tiles are split, with the top left showing the colour requested and the bottom right showing the colour displayed. Again at this stage only really a quick visual comparison.


Above: zoomed in view of Display QA report

By clicking the 'QA report' step at the bottom you are presented with a more detailed analysis of the displays performance as shown above. The left hand side confirms with a nice big green tick that the profile you have created has passed the ColorChecker tests. There is then some deltaE analysis, similar to what you are hopefully used to from our reviews. The dE figure is a classification telling you how big the difference is between the colour requested, and the colour produced. The lower the dE the better.

Under the 'average DeltaE results' section the software confirms that the average overall dE is 1.41. Since dE of 3 is the tolerance level (i.e. anything less than dE = 3 is considered good), it has passed overall. During our reviews we use LaCie's Blue Eye Pro software which also gives dE figures. LaCie classify dE readings as follows: If DeltaE >3, the color displayed is significantly different from the theoretical one, meaning that the difference will be perceptible to the viewer. If DeltaE <2, LaCie considers the calibration a success; there remains a slight difference, but it is barely undetectable. If DeltaE < 1, the color fidelity is excellent. So in this analysis from the i1 Profiler software dE is 1.41 average, and LaCie would classify this as being very good, close to excellent but with some slight difference in some cases.

Beneath the total overall average dE (1.41) there is an average dE for the lowest 90% of all the patches measured. The 22 patches with the lowest dE reading are averaged here, and so the overall average dE would be 1.28. The highest 10% equates to 2 patches which averaged at 2.87 dE. These are the two patches which were furthest off from the requested colour. These two patches are highlighted on the right hand tiles as well in red and yellow. We will look at those in a moment.

The software also confirms the total standard deviations average as well as the lowest and highest measurement averages. This shows the deviations of the measurements from the expected values according to X-rites help files and videos.

In the last section the software confirms the maximum recorded dE which in this case was 3.14. It also confirms the max dE in the lowest 90% readings which is 1.85 here.

If you highlight any of the tiles on the right hand site it brings up a little bit more information underneath. You can highlight any of the tiles by simply hovering your mouse pointer over them. Here I have hovered over the worst dE reading which was already highlighted with a red square. This confirms the dE recorded for this shade was 3.139 (3.14 rounded).


Click for larger version

You can save the report as well by pressing the integrated button. This saves it as a .htm file which you can then open in your internet browser. It looks like the above, basically just summarising all the details in the Display QA report and giving you some more detail if you need it.

The Display QA reports are at least more detailed than the standard post-calibration pictures you are given after a 'basic' calibration. It's good to see verification of the measured colour accuracy which seems to be the main focus of this software. There's plenty of detail about the dE performance of each shade which is useful. It it not quite as easy to follow / easy on the eye as the graphs produced from other software packages such as LaCie's Blue Eye Pro or BasICColor's software. It might have been nice to feature something a bit easier to refer to as a quick reference.

It was also lacking additional verification of other measurements you see from other software packages. There was no real validation of the gamma reached, other than the curves in the basic after-calibration report. There was no verification of your white point, despite having defined your target before the calibration. There was also no verification of your luminance, black depth or contrast ratio which was a shame. It would have been nice to see these included to give you a fuller picture of the displays capabilities and the success (or lack of perhaps!) from the calibration process. The software can only really be used to validate the profile you have created in terms of dE for different patches, and not much else. It cannot really be used to measure a monitors default setup either as it is only designed to validate a profile it has already produced.

A video walk through of this Display QA process is available in X-rite's training videos

 


Validation With LaCie Software

I closed the i1 Profiler software and used LaCie's Blue Eye Pro software with the i1 Pro device to check what it thought of the calibration outcome. Not that it matters really for the purposes of ths review, but we were using our office Dell 2405FPW monitor here for the tests. The monitor was left at default settings in the colour and RGB menu and the only hardware changes made were to the brightness during the i1 Profiler calibration process.


Calibrated Settings Test

 

Calibrated Settings

luminance (cd/m2)

117.9

Black Point (cd/m2)

0.19

Contrast Ratio

621:1

This LaCie report was run based on the calibrated profile created during the i1 Profiler steps. The LaCie report confirms gamma was 2.2 on average with a minor 1% deviation overall from the target. The i1 Profiler software did not verify our calibrated gamma, but it's good to see that the gamma we had originally defined as our target had been met. White point was also measured at an accurate 6544k, being again only 1% out from the target. As with gamma, this had not been verified by the  i1 Profiler reports sadly but it had nevertheless been met well.

Luminance was recorded here at 117 cd/m2 which was slightly lower than the target of 120 cd/m2. I suspect this is because the i1 Profiler software guides you to find the optimum brightness setting before the ICC profile is created, and so you are finding a setting which returns ~120 cd/m2 at that point in the process. Further corrections to colours, grey scale, gamma etc at an ICC profile and graphics card level could account for the final luminance being a little lower. Black depth was recorded at 0.19 cd/m2 giving us a contrast ratio of 621:1. This was a similar result that we have seen from tests with other software packages on this screen, including this LaCie software and their Blue Eye Pro device. Again although the i1 Profiler software does not verify the black depth at any point, it has managed to obtain a decent level for the screen being tested, and produced a contrast ratio which is on par with other software packages. No issues there thankfully with crushing blacks.

The LaCie software also confirms the average dE is 1.0 which is actually ever so slightly less than the i1 Profiler software reported (1.41). LaCie's software tests fewer shades however which would account for the difference. Maximum dE here was 3.2 which is very close to the 3.14 recorded by the i1 Profiler package. Overall the LaCie software concurs with the output from the i1 Profiler software, while also verifying that the gamma, white point, black depth and contrast ratio have been set up correctly and as per the targets defined.

 


Conclusion

It's good to see a new range of packages released incorporating the high end i1 Pro spectrophotometer device. As we have already covered in our full review, there's no doubt that it is a very reliable calibration device and very well regarded. Of course most users would not have the need for such an advanced and expensive device for calibrating just a monitor, but if you are working in a professional environment and have the requirement to calibrate multiple devices and want to include projectors and printers then it could well meet your needs nicely. From a display point of view it is extremely reliable and capable of calibrating and reading the widest range of display and backlight technologies. At the time of writing the i1 Basic Pro package retails for ~�840 GBP in the UK. This is actually more expensive than the older 'i1 Basic' package (~�685) and certainly a lot more than a high end colorimeter like the i1 Display 2 for instance (~�150). The more comprehensive i1 Photo Pro retails for ~�1,080 and the i1 Publish Pro is ~�1600.

The main thing we have tested here is the new i1 Profiler software from X-rite, a replacement for their rather old i1 Match package. I did feel that the software was a little lacking in some areas unfortunately. It is easy enough to use although is perhaps not as intuitive as their older software to navigate. It's not always clear which step you are in and what comes next. The online training videos are short and to the point but do help clarify which is one thing at least. Thankfully the process is reasonably quick which is a positive. It was good to see the inclusion of a luminance / contrast adjustment guide which works very well, although for some reason RGB adjustment guides are lacking. The basic mode also doesn't really offer you much in terms of control and the validation reports are very basic. There is nothing really there other than some basic visual tests using different coloured photos and a before and after tick box. That might be ok to give you a nice warm feeling that it has made a change to your setup but it's hard to just trust it on face value without any kind of proper measurements we can study and compare.

Thankfully the advanced mode is a bit better, and also gives you control over a further target for gamma. The Display QA feature is a welcome enhancement over the basic validation tests. There is a lot of information here about colour accuracy which is good, and that is very thorough. However it was a shame not to see measurements of the before and after gamma, white point, luminance, black depth and contrast ratio. All of these are reasonably basic measurements you would probably want to see, but are lacking in the i1 Profiler software. The older i1 Match software included these in fact along with a gamma curve graph and CIE colour space representation of the displays gamut. Although the dE information is useful it would have been good to see it presented in some form of graph for quick visual reference.

Thankfully the profiling process itself has proved to be very reliable. We validated the results of the calibration using the LaCie Blue Eye Pro reporting (a good example of the type of reports which are very useful!). Although the i1 Profiler software hadn't confirmed the targets for gamma, white point, luminance and contrast ratio had been met after it had finished the calibration, the LaCie software confirms they had been. This was a pleasing result and at least you can have some faith that the process you are carrying out is doing a good job, even if it doesn't tell you so at the end. Overall the results were good but the software was lacking in some reporting capabilities unfortunately from a display calibration point of view. If you are going to spend the money on an i1 Pro spectrophotometer package then you may well want to invest in a more advanced software packages from a third party.
 

Pros

Cons

High end spectrophotometer device included in new i1 Pro solutions

Lack of reporting features for gamma, white point, luminance, black point and contrast ratio

i1 Profiler produces reliable results

Sometimes not very intuitive to navigate i1 Profiler

Decent dE colour accuracy reporting from Display QA feature

No guidance on setting hardware RGB levels

Discuss this review in our forum. For further information please visit www.xritephoto.com or tel X-rite: +44 (0)1625 871100

 

 

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