Monitor ProfilingIf you look at a picture on your monitor, then how do you know that the colour red you are seeing is the one recorded by your camera?If you send files off to a printer, then how can you be confident that the colours they see will be the same as you see?Is the colour white on your screen an accurate representation of white? Is it too warm (yellowish) or too cool (bluish)How do you know that the shadow detail you can see in pictures is really there in the files? If your monitor darkens shadows, then you might be inclined to lighten them.
If you send this lightened image to be printed, then there is every chance that the shadows that looked fine to you on your monitor will be too light when printed.Editing images on a monitor that hasn’t been profiled and calibrated leaves all your edit work built on foundations of sand.There are a lot of things you can do to nail things down and be more confident that what you see on your screen is a good approximation to what your camera captured. The first and most important step is however, calibrating your monitor.There are lots more articles I’ve written, which go into a lot more detail about printing and colour management. – A short article showing why there is more to getting your prints to match your screen, than just calibrating your monitor. – some basic suggestions to this common problem.The Main Changes with the Spyder 4If you’ve a Spyder 3 elite running V4 software, then the main difference with the new package is in the sensor.
This from Datacolor:. Full-spectrum colour sensor – Spyder4Elite’s patented 7-colour sensor improves upon colorimeters that use 3-channel RGB sensors.
Each Spyder4Elite unit is individually tuned in the factory to accurately handle a variety of wide-gamut and normal gamut displays with ease. Single sensor calibrates all your displays – Spyder4Elite works with your laptop, multiple monitors, front projector, television (with paid software upgrade on website), iPad and even iPhone.
It works with LCD, LED, OLED, CRT, DLP and other display technologies. You can calibrate multiple displays connected to your computer.
Spyder4Elite is unique in its ability to calibrate all your display devices to achieve greater consistency. Improved accuracy and stability – The fourth-generation Spyder4Elite has double-shielded colour filters for an even closer match to CIE colour standards and improved long term stability. The software installs easily from the supplied CD and has a basic web activation system which provides you with an activation key, linked to the sensor serial number.Note that this does not restrict you in using the sensor on just one machine – there is functionality (StudioMatch) in the software specifically aimed at getting a collection of monitors closely matched.It’s worth noting that the installer checked for updates before running, so I was spared the minor irritation of installing software, only to find moments later that I need to install an update.
Screen calibration on Linux with a Spyder3This is mostly just a bunch of personal notes.' When I was a teenager, Mom said I'd go blind if I didn't quit doing.that. Maybe she was right — since the invention of internet porn, computer monitors keep getting bigger and bigger.!'
— Bill Ervin. On this page:.
Some images available as. Some images available on a. Some images available as aMore:.Using a profileIf you have a and you have generated a profile in Windows on a dual-boot machine or a past Windows install (you kept a backup, right?), you can use that profile directly by copying it to your Linux partition and issuing: $ xcalib profile.icc. As simple as that.But if you don't have Windows anymore, it's more problematic, for instance you can't use the DataColor software from a VirtualBox install of Windows.
It simply generates bogus icc profiles, probably because it doesn't have low-level access to the graphic driver.Remember to update your profile if you change you graphic card, your graphic driver or your monitor. Or simply when you monitor ages.Creating a profile SoftwareI drew on several pages to get this to work, in particular.
Credit where credit is due.First, install xcalib and argyll: $ sudo aptitude install xcalib argyllNote: this doesn't seem to be necessary anymore, so just skip this step. Then download the file and copy it to /usr/bin/. You must respect the case. This file is a part of the Spyder2 driver and works with the Spyder3, including the background light measurement (not that I care about that all that much, a gimmick IMO).ConnectionThen connect your Spyder and check it with$ lsusbBus 005 Device 087: ID 085c:0300 ColorVision, Inc.If you don't see the above line, then you may have the MTP problem in Ubuntu 11.10.