In a graphic design studio, the monitor is a measuring instrument, not just a screen. If two designers at adjacent desks see the same photo differently, sooner or later the client will notice: typically when the order comes out of the printer and the colours do not match what was seen on the display.
Why calibrate
Monitors have a colour shift from the factory, even expensive ones, and over time (as the backlight ages) the shift increases further. Without calibration, two identical monitor models can differ noticeably, let alone monitors from different manufacturers side by side at one workstation.
Calibration ensures that the colour on the screen matches a defined standard, for example the sRGB or Adobe RGB colour space, and not how the monitor thinks it should look on its own.
Calibration probes and tools
The foundation is a hardware colorimeter or spectrophotometer placed on the screen to measure actual colours and brightness together with software. Cheaper colorimeters suffice for standard LCD/OLED monitors, while a spectrophotometer is suitable where print output or special display technologies are also calibrated.
Professional monitors for graphics usually have their own calibration software and sometimes built-in sensors that simplify calibration and allow it to be scheduled automatically without user intervention.
ICC profiles
The output of calibration is an ICC profile: a file that tells the operating system and applications how a given monitor should behave so that colours match reality.
The profile must be loaded in the operating system and verified that the specific application actually uses it: not all programs handle profiles in the same way. If a studio operates multiple monitors on one computer, each requires its own profile; visual approximation does not work.
How often to calibrate
The recommended interval is approximately once every two to four weeks during normal operation. For monitors with LED backlighting, the interval can be slightly extended; for older panels, more frequent calibration is advisable.
More practical than a fixed calendar is an automatic reminder directly in the calibration software or integration with a planner, calibration that is forgotten is useless.
Workplace lighting
Calibrating the monitor itself is only half the job: the other half is the environment in which you view the screen. Strong daylight falling directly on the display, or conversely warm yellow office lighting, can shift colour perception just as noticeably as an uncalibrated panel.
Professional workstations therefore rely on neutral, constant lighting with a defined colour temperature (typically around 5000 K, i.e., close to daylight), without direct sunlight falling on the screen and without vividly coloured walls or objects in the field of view that could affect colour perception. For glazed workstations with a street view, this is managed using blinds or by moving the monitor out of direct sunlight during the day.
Test graphics and visual inspection
In addition to instrument calibration, it is worthwhile to have simple test graphics at hand: an image with a grey scale, skin tones and basic colours, which can be quickly visually compared between monitors. This is not a substitute for probe measurement, but a quick check to see if anything has shifted significantly between calibrations, for example after updating the graphics driver, which can silently reset the monitor profile.
Consistency between studio and print
Even a perfectly calibrated monitor does not guarantee that the print will look identical: the printer and paper have their own colour space (CMYK, specifically the ICC profile of that particular printer and paper combination).
The solution is soft proofing directly within the graphic software: a simulation of how the output will look when printed on a specific device with a specific paper profile. If a studio has a long-term partnership with one printer, it pays to obtain its ICC profile for the given paper and use it for the final check before sending data to print.
Colours are just one aspect of how a project ultimately appears to the client; equally important is how big data reaches them. We address this in our article about secure data handover to the client.
Do colours not match between monitors or with print output?
We will advise on probe selection, calibration settings and soft proofing.