If you care about colors in your work, you need to care about the tools you use to interact with them.Īrguably, purchasing a monitor calibration tool is a worthwhile investment even for general computer usage. The same logic applies not only to photography but also to all fields that require consistent color - for example, web, graphic and product design. Calibrating your monitor ensures that what you see is consistent from day to day and also follows a known universal standard. Your photographs, illustrations or designs can vary wildly in color from one display to another, and even more during printing, where any misstep can represent a big waste of money. An uncalibrated screen is an unknown variable. The monitor is the main place of interaction between creative professional and digital work. To base all your decisions regarding color on an unknown variable is the same as drawing on paper with the lights turned off. However, since most LCDs have extra contrast, you may set your LCD gamma to compensate for it BEFORE profiling and then create profile for gamma "As measured".Ĭreating 1D LUT for video card (8bit to 8bit) will only cut your colour depth.Absolutely, yes! Ideally, we all should work on calibrated displays that allow us to evaluate our work according to a universal standard. If your entire workflow is 16bit there is zero sense in creating 1D LUT. Therefore your LCD won't even be 8bit anymore (more like 7,5bit, for example). If you calibrate your LCD for gamma 2.2 the Displa圜AL will make your LCD loose colour depth because it does not offer any interactive gamma adjustment. Assume that you have an 8bit LCD which does not have gamma correction at all (or does not allow the gamma to be set enough closely to taget) and also does not use editable internal 1D LUT. using display internal LUT (may have much bigger internal precision like 8bit -> 14bit).using videocard LUT (most oftenly 8bit -> 8bit).However, there is a problem, at least with Displa圜AL: creating profile for gamma 2.2 means that 1D LUT will be created. efficient for be used by human) and also make 8 bit images with gamma 2.2 or sRGB expose less banding (bigger colour depth) when viewed at 100%. Setting display gamma to 2.2 or sRGB (in LCD OSD settings, that is) will make it closer to perceptually uniform (i.e. You can run “Report on uncalibrated display device” from the “Tools” menu to measure the approximated overall gamma among other info. For example, you might have a display that offers hardware calibration or gamma controls, that has been internally calibrated/adjusted to a different response curve, or your display's response is simply not close to a gamma of 2.2 for other reasons. Of course, you can and should change the calibration response curve to a value suitable for your own requirements. A target response curve for calibration that is reasonably close to the native response of a display should help to minimize calibration artifacts like banding, because the adjustments needed to the video card's gamma tables via calibration curves will not be as strong as if a target response farther away from the display's native response had been chosen. Many displays, be it CRT, LCD, Plasma or OLED, have a default response characteristic close to a gamma of approx. Another one dispcalGUI documentation: Why has a default gamma of 2.2 been chosen for some presets? 2.4 is close to that of many monitors, and close to that of the sRGB colorspace. The default response curve is a gamma of 2.4, except for Apple OS X systems prior to 10.6 where a gamma of 1.8 is the default. Another source : Adjusting and Calibrating Displaysīy default, the brightness and white point will be kept the same as the devices natural brightness and white point. Official source: page 96,97 of this book for example. 2.2)? if the gamma have any influence in the viewing process excepting all the other variables (room light condition, color temperature, etc considering these the same in both cases). How can I approach this, which is the "right" seein color, at native monitor gamma value or other value (e.g. On the other hand, gamma value could be set at 2.2 When it comes to color management and calibration, reading in official/unofficial sources, there are different oppinions telling that the native display gamma value can be left "as is" = "native" (2.43 measured in my case)
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