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Search: Posts Made By: spacediver
Forum: Display Calibration   08-01-2015, 02:18 PM
Replies: 33
Views: 459
Posted By spacediver
this is pretty exciting stuff. Is there a...

this is pretty exciting stuff. Is there a performance hit when using reshade in this way?
Forum: Display Calibration   06-08-2015, 03:00 AM
Replies: 11
Views: 203
Posted By spacediver
Yes and no. Like I said, the human visual system...

Yes and no. Like I said, the human visual system scales the dynamic range of its sensitivity in concert with the dynamic range of the environment. Because of this, a contrast ratio of 20,000 to 1 may...
Forum: Display Calibration   06-08-2015, 01:49 AM
Replies: 11
Views: 203
Posted By spacediver
When you say "these other displays", what are you...

When you say "these other displays", what are you referring to? I don't see mention of them in your previous posts.

And a contrast ratio of 40 thousand to 1 with a peak luminance of 120 nits...
Forum: Display Calibration   06-08-2015, 01:42 AM
Replies: 11
Views: 203
Posted By spacediver
I still don't follow why this is flawed....

I still don't follow why this is flawed. Increasing peak luminance while keeping black level the same will of course increase contrast ratio. This isn't a paradox, or a flaw.



I'm still not...
Forum: Display Calibration   06-08-2015, 12:31 AM
Replies: 11
Views: 203
Posted By spacediver
What do you mean when you say that the 20,000:1...

What do you mean when you say that the 20,000:1 ratio is flawed and not correct for OLED? I don't really understand what you're asking in your post.

I forget what the luminance detection threshold...
Forum: Display Calibration   06-07-2015, 11:30 PM
Replies: 10
Views: 423
Posted By spacediver
If you google that first reference, the first hit...

If you google that first reference, the first hit is a link to the pdf. Google scholar also links to a google book version.

Here'...
Forum: Display Calibration   06-07-2015, 07:56 PM
Replies: 231
Views: 12,653
Posted By spacediver
I think there's a bit of a misconception about...

I think there's a bit of a misconception about the idea that the gamma of a CRT is "native". Yes, the gamma (essentially the transfer function of the triode) is influenced by the structure of the...
Forum: Display Calibration   05-31-2015, 06:50 PM
Replies: 51
Views: 1,508
Posted By spacediver
my bad, I meant 298 thousand:1 thanks for...

my bad, I meant 298 thousand:1

thanks for the readings, that is a sweet sweet instrument, and a quality display!
Forum: Display Calibration   05-31-2015, 05:14 PM
Replies: 51
Views: 1,508
Posted By spacediver
Not sure, not really familiar with that...

Not sure, not really familiar with that information display.

On the right hand side of your figure, it lists a luminance of 119.61 nits (I'm assuming peak luminance?), and a contrast ratio of...
Forum: Display Calibration   05-31-2015, 03:10 PM
Replies: 51
Views: 1,508
Posted By spacediver
yep, the FW900s are a joy to use, they really...

yep, the FW900s are a joy to use, they really shine for viewing photography, videos, and of course gaming, but they're rather small compared to the S9C :)

You sure you didn't mean 0.0003 fl? I...
Forum: Display Calibration   05-31-2015, 09:01 AM
Replies: 51
Views: 1,508
Posted By spacediver
What display? My FW900 is about 0.0006 cd/m^2. Do...

What display? My FW900 is about 0.0006 cd/m^2. Do you have an OLED?
Forum: Display Calibration   05-28-2015, 07:04 PM
Replies: 178
Views: 13,792
Posted By spacediver
aye, last I checked, the DICOM was specified all...

aye, last I checked, the DICOM was specified all the way up to close around 4000 nits (pretty cool for 2006).
Forum: Display Calibration   05-28-2015, 06:55 PM
Replies: 178
Views: 13,792
Posted By spacediver
not to mention that the perceptual uniformity of...

not to mention that the perceptual uniformity of any given EOTF is probably dependent upon the luminance range over which it's being implemented.

i.e. 2.4 gamma may be fairly uniform between 0...
Forum: Display Calibration   05-24-2015, 10:57 AM
Replies: 51
Views: 1,508
Posted By spacediver
HDTV, this is what I mean: All your posts end...

HDTV, this is what I mean: All your posts end with a number (which seem to increment by 1 with each post):

http://i59.tinypic.com/2jc946c.png
Forum: Display Calibration   05-22-2015, 01:42 PM
Replies: 51
Views: 1,508
Posted By spacediver
HDTVChallenged, what's with the numbers in small...

HDTVChallenged, what's with the numbers in small font at the end of your posts?
Forum: Display Calibration   05-18-2015, 10:30 AM
Replies: 18
Views: 513
Posted By spacediver
From Yoshi Ohno's...

From Yoshi Ohno's (http://www.nist.gov/pml/div685/grp03/ohno.cfm) chapter in Colorimetry: Understanding the CIE system....
Forum: Display Calibration   05-17-2015, 02:28 PM
Replies: 18
Views: 513
Posted By spacediver
I don't think this is correct, despite the...

I don't think this is correct, despite the nomenclature. See my thread here (http://www.avsforum.com/forum/139-display-calibration/1503933-spectrophotometers-spectroradiometers-i1-pro.html)
Forum: Display Calibration   05-14-2015, 09:29 AM
Replies: 25
Views: 436
Posted By spacediver
I thought DCI was 10 bit, not 12 bit. But looks...

I thought DCI was 10 bit, not 12 bit. But looks like it is 12 bit according to wiki (http://en.wikipedia.org/wiki/Digital_Cinema_Initiatives#Image_and_audio_capability_overview), although they say 10...
Forum: Display Calibration   05-14-2015, 09:25 AM
Replies: 36
Views: 679
Posted By spacediver
Your gamma is way way way off. The image must...

Your gamma is way way way off. The image must looked very washed out. See the white line in that graph? That's where the red green and blue lines should be lined up with. My advice would be to sort...
Forum: Display Calibration   05-12-2015, 07:51 AM
Replies: 231
Views: 12,653
Posted By spacediver
From another thread...

From another thread (http://www.avsforum.com/forum/138-avs-forum-podcasts/1533867-all-about-gamma.html#post24924641)
Forum: Display Calibration   05-11-2015, 05:51 PM
Replies: 16
Views: 660
Posted By spacediver
That's a shame. I was thinking it could operate...

That's a shame. I was thinking it could operate similarly to the way a CMOS or CCD camera sensor works, where radiance and time can be traded equally.
Forum: Display Calibration   05-11-2015, 10:50 AM
Replies: 16
Views: 660
Posted By spacediver
On the topic of integration time, I've been...

On the topic of integration time, I've been wondering if it's possible to extend the maximum integration time of the i1d3 to an arbitrary value. Presumably this would enable even lower luminance...
Forum: Display Calibration   05-08-2015, 08:22 AM
Replies: 231
Views: 12,653
Posted By spacediver
my apologies fluxo, seems that I may have been...

my apologies fluxo, seems that I may have been the one making a thinking error here :)
Forum: Display Calibration   05-07-2015, 09:34 PM
Replies: 231
Views: 12,653
Posted By spacediver
the part that confuses me is that linearity can...

the part that confuses me is that linearity can be defined with respect to luminance, or with respect to some other quantity. If an EOTF creates a perceptually uniform relationship between adjacent...
Forum: Display Calibration   05-07-2015, 09:00 PM
Replies: 10
Views: 267
Posted By spacediver
They're circular patches on a background of pure...

They're circular patches on a background of pure black.
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