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post #7741 of 7748 Old 07-26-2016, 02:13 PM
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When using the builtin automatc image generator, what is the recommended image area %, APL level % and Pattern Intensity % values for a Samsung 64F8500 plasma?
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post #7742 of 7748 Old 07-26-2016, 02:26 PM - Thread Starter
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Leave intensity at 100% and I use 5% pattern size with 10% APL. This should give a black level consistent with average viewing levels. Try BT.1886 set to 2.4 relative gamma and 50% offset.
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post #7743 of 7748 Old 07-26-2016, 06:36 PM
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Leave intensity at 100% and I use 5% pattern size with 10% APL. This should give a black level consistent with average viewing levels. Try BT.1886 set to 2.4 relative gamma and 50% offset.
zoyd,
Why is the Y Target for 0% white always left blank in the grid? The graphs show it as 0.

Last edited by Dominic Chan; 07-27-2016 at 12:36 AM.
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post #7744 of 7748 Old Yesterday, 07:13 AM
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Zoyd,


After opening some older calibration files in 3.4.2, I found some bugs not present in 3.4.1:

Selecting BT 1886, in near-black graph the target luminance goes to zero instead to actual black level for 0% white stimulus. Also noted by Dominic Chan in the above post, I now see.

Saturation shift graphs look completely different: in 3.4.1 starting with 0% shift (as a result of near-perfect grayscale) to max +/- 5% for fully saturated primaries/secondaries. On the other hand, 3.4.2 starts with +/- 3% (even for near-perfect grayscale!!) with fully saturated green and magenta going to 20-50%. The resulting dE graph of course is also different compared to the one in 3.4.1.


Sorry to bother you with this, but perhaps you missed my post #7657 about scaling ISO 12233?
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post #7745 of 7748 Old Yesterday, 09:40 PM
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Hi guys,

I know I must be missing something, so I apologize in advance. I've read the first few pages of this thread and checked out the Argyll docs to no avail.

I'm trying to calibrate my Sony VPW-VW665ES on a Stewart FireHawk screen with an i1 Display Pro. If possible, I'd like to calibrate for HDR video signals.

When I got to the Sensor/Argyll Meter Property Page, I'm presented with a number of choices, but I can't find any documentation on what the choices mean, or more importantly, which ones I should choose.

The Display Type is obvious, and in this case I've chosen "Projector".

What are the Reading Type and Observer Type options, and which should I set for each?

Since I'd like to calibrate to the image on the screen, I'm planning on setting the i1 on a tripod as close to the screen as possible, and in such a way that it can sample the signal without interference from its own shadow.

I'm planning on using the built-in signal generator, although I'm curious if there's any real advantage to using madTPG or the Chromecast. I can see where to choose the target screen, and GDI display mode seems to be the most straightforward. I know video levels are 16-235, but if I'm doing HDR, should I choose 0-255 (PC levels)?

Should I still be targeting a gamma of 2.2 for HDR?

Thanks in advance for the help! I'm looking forward to getting this thing dialed in.
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post #7746 of 7748 Old Today, 09:23 AM
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What are the Reading Type and Observer Type options, and which should I set for each?
The ambient type is for measuring "ambient light" with the diffuser going over the meter aperture. The i1Display Pro automatically detects that.
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Since I'd like to calibrate to the image on the screen, I'm planning on setting the i1 on a tripod as close to the screen as possible, and in such a way that it can sample the signal without interference from its own shadow.
In principle this corresponds to the "Telephoto" mode. However, the i1Display Pro meter does not distinguish between "Telephoto" and "Display", so you can choose either.

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I'm planning on using the built-in signal generator, although I'm curious if there's any real advantage to using madTPG or the Chromecast.
Ideally, the calibration patterns should be displayed using the same device that you will be using when playing movies.
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post #7747 of 7748 Old Today, 09:28 AM
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hai all
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post #7748 of 7748 Old Today, 10:26 AM
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Quote:
Originally Posted by Dominic Chan View Post
zoyd,
Why is the Y Target for 0% white always left blank in the grid? The graphs show it as 0.
zoyd,

Just noticed a not entirely new problem with 3.4.1. In the GDI mode, the test patterns do not cover the entire screen on the 2nd display. In the past, my workaround was to open the "Test Colors" window and drag it to the 2nd display. This still works for 3.4.1, but it reverts to the partial screen for every run, meaning I have to reopen the Test Colors window before each run.
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