Calibrating the Macintosh screens

[litemover]

You need to always always calibrate the displays you use with catalyst.
Every output system has different colour and contrast characteristics.

Thank You Richard but I do this already on all gigs except I use 2.2 television gamma because Danny told me to use it for TV as we balance to 3200K. I should use a custom white point and balance to a lower gamma but the lower I go, the more washed out the image gets. Then the image gets further tweeked by the video people. My screen calibration is really just a reference point for them as it has no bearing on the different projectors.

This doesn't help with the inverting problem. This is truly a bug and is very difficult to deal with when being asked by the director for something green. I must use my red and cyan encoders to try to mix a green rather than just pressing my green palette over my inverted image. Inverting images is a great way for me to recycle old content especially on a series.

Try it out and you'll see what I mean with the washing difference between 1.2 and 3.2. You'll see what i mean.

Christian

[samsc]

This doesn't help with the inverting problem. This is truly a bug and is very difficult to deal with when being asked by the director for something green.Christian

i made another colorfx that does the right thing.

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most people dont know about calibrating their screens.
and it really makes a difference too.

[samsc]

Danny told me to use it for TV as we balance to 3200K.

....Oh no not colour temperature.....

that's another can of worms.

you cannot strictly speaking set up the colour temperature of any device- in software, because the colour temperature is really determined by the lamp source used in the projector or monitor, or whatever.

these lamps generally do not have continuous spectrums- so you cant 'set the colour temperature' to anything.

this is an approximation only, and what you expect to see based on the colour response of all the devices, cameras, other lightings, maybe nothing that you expect....

[litemover]

....Oh no not colour temperature.....

Was quoting danny on 2.2 tv gamma. Downstream of me, I just put up the b&W GRADIENT and they (projector people) adjust ct, though they sometimes ask if I can raise it for them due to lamp issues.

CC

[samsc]

Was quoting danny on 2.2 tv gamma. Downstream of me, I just put up the b&W GRADIENT and they (projector people) adjust ct, though they sometimes ask if I can raise it for them due to lamp issues.

CC

each projector will have its own native or progammable gamma:
How one goes about calibrating this stuff really has to be based on what works, looks good, doesnt distort hilites and colour, unless that is what the end user wants?

the issue is that mac screens are setup with a less steep gamma curve that pc's, macs default to 1.6-1.8.
This means that images produced on a mac look different on pcs.

One cant really compensate for the green or brown tones that old bulbs give off.

[samsc]

I added a new ui HUD in f24.

It shows the current gamma transfer function across both displays.

This allowed us to check that all the displays in istanbul where using the same output gamma, which was important for the screen processors doing the overlap.

[samsc]

I added a new ui HUD in f24.

It shows the current gamma transfer function across both displays.

This allowed us to check that all the displays in istanbul where using the same output gamma, which was important for the screen processors doing the overlap.

How do i use this?

This is set by the os and colorsync.

The 'Displays' preferences allow you to set a calibration for each screen.
this is what the calibration effects.

There is a rather good piece of software called 'Profile Maker Editor' from GregTabMacbeth that allows you to make a curve in any shape you want.

You cold use this to create a screen profile that was optimal for a DL1 in certain conditions.