The colorimetry of the primaries is independent of the matrix that is used to convert RGB values to YUV values.

Hmm, I don't think that's true. E.g. sRGB (Rec. 709) and Rec. 601 have different primaries, consequently the matrix for Rec. 709 to/from YUV is different than Rec. 601 to/from YUV.

My understanding from the software guide and this discussion is that I should use 2.4, but is this the case if I'm grading in typical "movie viewing conditions" (i.e. a darken room)?

Probably. Generally, the darker the surroundings, the higher the viewing gamma to compensate. I don't know much about values and conditions commonly used in movie production, though.

On another note, I just released dispcalGUI 0.9.6.6, most notable new features are optional black point compensation ('baked' into the profile if enabled), a profile info window with 2D gamut plot, and the 3DLUT creation facility. It should also fix the issues brought up on the previous page of this thread.

"Just an update re: DispcalGUI

After a few conversations with the developer this software is now capable of generating 3DLUT files in a few formats."

I am Confused? Florian, I thought I originally contacted you and introduced you to the idea of implementing 3d lut export in early january, as well as helping you find documentation on the 3dl format?

Hi all,

Inspired by this thread I bought an i1display pro so now at least I can trust my monitor.

Does anyone here know if I could use my i1display pro to measure CRI and produce a graphical display of the spectrum of a light source?

This is a little off-topic, but didnt find any other discussion about my problem. I'm trying to calibrate my marshall external monitor but I dont know how to output color bars via gh2. I've tried to upload jpeg containing the color bars image to my sd, but the camera wont display it. Any ideas? Thanks!

Edit: Solved! Had to use windows paint.

Older version of Mac OS used a gamma value of 1.8. Beginning with Mac OS 10.6, Apple has set the default gamma value to 2.2, which has always been the setting of Windows OS. So, Choose PC in your monitor’s settings.

There are various tests you can run to verify that your calibration is correct (or close to it). The software that came with you calibrator is a good starting point. Then do some research to familiarize yourself with what color calibration and color profiling entails. Here’s a good place to start: http://www.lagom.nl/lcd-test/

Im very new to monitor calibration tools. Can someone offer some advice on a good and inexpensive calibration tool? I am looking at buying the qnix qx2710LED, and it apparently has no on-screen controls for contrast or color, just brightness. Are calibration tools monitor dependent, or will they work on any monitor?

@joethepro

I too have a Korean made panel. I recently picked up the crossover branded version.

Anyways, I was lucky enough to get a xritei1display pro/colorchecker passport bundle on sale.

Calibration is accurate (enough for my uses) and very quick. I highly recommend investing in hardware calibration if budget permits

@joethepro The spyder4 is a hardware calibration tool. A colorimeter. The spyder4 is the same type of tool as the xritei1display pro. I was merely suggesting you might find a better deal with the bundle like I had.

The expression "hardware calibration" is normally referring to monitors with internal LUTs of reasonably high bit depth, which can be loaded as a result of the software with the probe. The probe is always hardware, of course, but if the corrective LUTs can only be loaded into the GPU instead of the monitor you may get problems with banding. The latter is called software calibration.

@nomad

Sure, that makes sense. However remember that DisplayCAL has an interactive mode to start with, so you can get the RGB baseline to minimise the correction in software. Ultimately whatever you do the computer has some sort of display profile, unless you were to generate one yourself I don't believe they are flat.