[JohnnytheSkin]

I have a Mitsubishi WD-57831 DLP, and while I'm not looking for a professional calibration (yet...), I would like to do some user tweaking with the PerfectColor and PerfectTint controls.


However, I'm not sure what Cyan and Magenta are supposed to look like when calibrated! Is there a place where I can find a correct SMPTE color bar pattern? Or where I can download 1920x1080 calibration images for use on PS3 and 360?


Any help would be MUCH appreciated!

 

[Ratman]

 http://www.mediacollege.com/video/te...ars-smpte.html
http://www.real-time-vision.com/back..._pattern.shtml

 

[JohnnyG]

Viewing colour bars on your computer monitor isn't going to help unless your computer monitor is calibrated.

 

[Ratman]

Yeah... but now we know what cyan and magneta look like.

Get the HD-DVD add-on for the XBox and use this:
http://www.dvdinternational.com/pd_d...entials_hd.cfm

 

[JohnnytheSkin]



Quote:
Originally Posted by JohnnyG /forum/post/0


Viewing colour bars on your computer monitor isn't going to help unless your computer monitor is calibrated.

I have a 6500k setting on my monitor and am using the sRGB color profile...I figure that's pretty close (have also used the Media Center patterns).

 

[ChrisWiggles]



Quote:
Originally Posted by Ratman /forum/post/0


Yeah... but now we know what cyan and magneta look like.

No we most certainly do not.


You can use those colorbar patterns to set color properly, but you certainly cannot use them as a reference to know what they're supposed to look like obviously.

 

[ChrisWiggles]



Quote:
Originally Posted by JohnnytheSkin /forum/post/0


I have a 6500k setting on my monitor and am using the sRGB color profile...I figure that's pretty close (have also used the Media Center patterns).

That is a terrible assumption. The 6500K setting on your monitor is extremely unlikely to be accurate at all.

 

[JohnnytheSkin]



Quote:
Originally Posted by ChrisWiggles /forum/post/0


That is a terrible assumption. The 6500K setting on your monitor is extremely unlikely to be accurate at all.

Any suggestions then, other than getting an ISF calibration? I'm just looking for some basic, do-it-yourself tips and am overwhelmed with the options on the TV.


I have DVE, GetGray, and the THX patterns and glasses, but nothing else.

 

[Ratman]



Quote:
Originally Posted by ChrisWiggles /forum/post/0


No we most certainly do not.


You can use those colorbar patterns to set color properly, but you certainly cannot use them as a reference to know what they're supposed to look like obviously.

What is your problem?

Did you not pay attention to the "wink" or do you just like to continually to take jabs at me? Ease off a little... thanks.

 

[ChrisWiggles]



Quote:
Originally Posted by JohnnytheSkin /forum/post/0


Any suggestions then, other than getting an ISF calibration? I'm just looking for some basic, do-it-yourself tips and am overwhelmed with the options on the TV.


I have DVE, GetGray, and the THX patterns and glasses, but nothing else.

Well, without colorimetry equipment, you're basically stuck using your eyes and guessing, which can be fine. You can still use colorbars correctly to set colors fine, but greyscale is different, and the secondaries will depend on that as well.

 

[ChrisWiggles]



Quote:
Originally Posted by Ratman /forum/post/0


What is your problem?

Did you not pay attention to the "wink" or do you just like to continually to take jabs at me? Ease off a little... thanks.

I'm sorry, but it wasn't clear to me that you were being sarcastic. My mistake. In any case, we're on the same page.

 

[Michael TLV]

Greetings


Made me laugh there. I once had a client in LA that made me come back because the calibrated image on his RPTV did not look like his 6500K setting on his computer monitor ... which he somehow took to be correct because it said so.

Cyan is between blue and green. Now you have to determine if you want blue cyans or green cyans.


Magenta is between red and blue. Now you have to determine if you want blue magentas or red magentas.


Without test gear ... it just comes down to your "taste."


Regards

 

[rmongiovi]

The logician in me says:


The primary colors are

red

green

blue
The secondary colors are

"not red" = green + blue = cyan

"not green" = red + blue = magenta

"not blue" = red + green = yellow
I'd assumed that the secondaries are equal parts of the two primaries that make them up. Is that not the case?

 

[Ratman]

 http://www.colorado.edu/physics/2000/tv/colortv.html
http://en.wikipedia.org/wiki/RGB
http://www.cybercollege.com/tvp015.htm

 

[ChrisWiggles]



Quote:
Originally Posted by rmongiovi /forum/post/0


The logician in me says:


The primary colors are

red

green

blue
The secondary colors are

"not red" = green + blue = cyan

"not green" = red + blue = magenta

"not blue" = red + green = yellow
I'd assumed that the secondaries are equal parts of the two primaries that make them up. Is that not the case?

Well, sure. But again, how do you establish equal parts of the two primaries? You have to measure that, which is what we're all getting at.

 

[krasmuzik]



Quote:
Originally Posted by rmongiovi /forum/post/0


The logician in me says:


The primary colors are

red

green

blue
The secondary colors are

"not red" = green + blue = cyan

"not green" = red + blue = magenta

"not blue" = red + green = yellow
I'd assumed that the secondaries are equal parts of the two primaries that make them up. Is that not the case?

Not if you think of it as


cyan = not red = white - red.


Which is what it is in reality on a gamut diagram - the primaries align with the secondaries thru the white point - secondaries are NOT the mid point of the edge. If Red+Blue+Green is balanced for a 10000K white - then Red+Blue would be more Purple than Magenta. This assumes color/tint are correct - what color/tint does is rotate colors around or push away (towards) the white point - or it may just make colors brighter. You really need gear if you want to fine tune these individually beyond what you can do with AVIA filter checks.


While it will not help with individual color controls which would require calibration gear that you know works well out at the primaries - when using color bars visually I would look at yellow first - much easier to tell if it is lime or orange - or even lemon more than banana yellow. I have heard some criticism of calibrated PJs having a mustard yellow - that is what it is supposed to be - people get used to the limy yellows which is very wrong!

 

[ChrisWiggles]

I prefer grey poupon.

http://www.youtube.com/watch?v=zmOHeWrr9V4

 

[krasmuzik]

Well if you like your yellows desaturated with wine and grit - OK

Anyways I missed the joke in the faux commercial - sounded like a phone underwater.

 

[rmongiovi]



Quote:
Originally Posted by krasmuzik /forum/post/0


Not if you think of it as


cyan = not red = white - red.

What do you mean "not if I think of it as"? That's exactly how I think of it. So I'm confused what you mean by "not".


If my set were perfectly calibrated, I'd have white = 100% red + 100% green + 100% blue. Then cyan would be 0%red + 100% green + 100% blue, right?


So what is it that I'm not "not" thinking of it as?

Roy

 

[ChrisWiggles]

roy, that's correct. Although in addition, you also have to take into account the fact that for the secondaries to be correct, the primaries also have to be correct.