Hi William (offlist) On Thursday, August 7, 2003 4:59:22 pm William Chitham wrote:
> Having finally taken the plunge and bought an eye1 display calibration > device some questions arise. > > 1.On my Mac I can switch between different monitor profiles on the fly but > on my W2k machine I have to restart to change them. Is this the case with > XP? I didn't think this was necessary, but, as Richard said, make sure nothing else is affecting Win calibration (Adobe Gamma Loader in particular needs removing). I found that a restart tended to spoil my calibration if there was a problem, not to improve it. Could this be it, the calibration LUT part of the profile isn't properly loaded on restart? Also you are going to need to check your video card for comatability with the part of profiling that loads an LUT to the card. Go to Colorvision's website and get <opticheck>. http://www.colorvision.ch/beta/downloads/50454093920e2f403/index.html > > 2.The device calibrates the screen to a standard (in theory) but ambient > light conditions obviously affect the way images look on screen. true, but as long as they are consitent and reasonably neutral - in practice - most users are OK. >Is there a > standard for ambient lighting? yes you need D50 (color 95 or 950) florescents and a lowish luminance (not sure of a figure without checking the specs) >I have visited digital suites with lighting > that varies from pitch black to well lit with daylight balanced > fluorescents. me too in a brighter room users need more screen luminance, as it gets darker that requirement drops. Also, user vision seems to differ in comparing screen to print, so it's useful to have a large range of colour temps (white points) available as options in the SW. iOne SW does not have this. My favourite monitor cal utility basICColor Display will soon be available to support the ione Display calibrator (right now a firmware fix apparently put in there to identify only that device to the Gretag SW prevents basICC working with the iOne.) basICColor Display SW is a BIG step up. [first licence is 65 pounds, you do pabout blatant promotion I do sell it, as a service to my clients, so many were asking for it and buying from Germany was such a pain as they don't take cards, I pre bought and have stock. >Digital images that look fine on screen in a dark photo studio > can look too dark on screen in the designers office even if both > screens are properly calibrated. yes this is an issue but remember that designers are used to looking at that screen and seeing print which matches. > > 3.Having calibrated a screen how can I tell if it is right? VERIFICATION KIT::: a bit about a product we recommend: In the world of monitor calibration/profiling, we must be certain that the post calibration/profiling appearance is correct. However- because of the complexity of profiling applications, the potential for hardware conflicts, the uncertain performance of some devices, and the fragility of hardware calibration devices, there is no certainty, either long or short term, without having a good reference to compare devices with. An onscreen image must to be compared to a printed image to verify monitor performance. Of course you need a verified print to do this, namely a print which accurately displays what's in the electronic file - and - we can provide one. [printed magazine work is not much use when it comes to profile verification, as the printer matches his proofing machine whatever that may be, or makes individual adjustments to suit the clients wishes]. Just to be sure all is right with the world of colour - you might be interested in our CMnet/Pixl Verification kit, consisting of an A4 Durst Lambda printed image with GATF <metamerism checker> and CD with the same image, a manual and a Photoshop <proof setup> settings file for viewing. >My Mac and PC > screens are side by side and they both look good but they don't quite > match so at least one of them must be wrong (but they both look > better than before when I did them with Adobe Gamma). yes, you should be able to get a good match (with both displaying the same image in photoshop, don't go by the desktop). We need to know which one is wrong (or that it's both). > > 4.My PC screen is a Mitsubishi Diamond pro 930. After calibrating it has a > slightly pink look in the neutral greys. something's wrong then. I find that iOne SW doews have a bit of a reddish feel on some screens - but I've only seen it in skintones. >Has anyone else any experience of > calibrating this model? An email to GretagMacbeth's tech support elicited a > a response including the following: "we have noticed a reddish effect when > calibrating specifically Lacie Monitors with i1 Match vs. 2.0.2. Due to this > fact we have developed a so called "hotfix" wich can be applied to i1 match > vs 2.0.2 so that the original fullscreen mode during the calibration is > reduced to a quarter of the screen. This has in general a positive influence > on CRT monitors and improves the neutrality. this hotfix will be implemented > into our next release." . The hotfix definitely improved things. interesting perhaps the SW process was overloading the guns. basICColor uses a small window, I suggest you get a demo copy once it supports iOne Display (should be soon). > > > Regards, > > William Chitham. Regards, NeilB. Apple Solutions Expert colourmanagement.net :: Consulting in Imaging & Colour Management custom scanner and printer profiles, training on Imacon Scanning supply Gretag + eyeOne, ColorSoloutions basICColor : Display etc. XRite www.colourmanagement.net/ :: www.apple.com/uk/creative/neilbarstow/ - telephone +44 (0) 1273-774-704 cellphone +44 (0) 7778-160-201 - =============================================================== GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
