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362 posts

Ultimate Geek


Topic # 72328 24-Nov-2010 12:41 Send private message

is it just me or does anyone else chuckle when they see these advertised?

I like the way they "add" a fourth primary colour to the "three primary colours - red, green and blue"

Green isn't a primary colour - it is made by mixing blue and yellow. The 3 primary colours are red, blue and yellow.

I know what they are trying to say, but technically what they claim is incorrect. If they specified the 3 colours that make up a pixel, they would be correct, but most of the advertising I have seen doesn't clarify this.

Do you reckon we could get free ones for false advertising? Tongue out




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1163 posts

Uber Geek


  Reply # 408867 24-Nov-2010 13:04

Rollux: is it just me or does anyone else chuckle when they see these advertised?

I like the way they "add" a fourth primary colour to the "three primary colours - red, green and blue"

Green isn't a primary colour - it is made by mixing blue and yellow. The 3 primary colours are red, blue and yellow.

I know what they are trying to say, but technically what they claim is incorrect. If they specified the 3 colours that make up a pixel, they would be correct, but most of the advertising I have seen doesn't clarify this.

Do you reckon we could get free ones for false advertising? Tongue out



 

I have seen the ad but not sure of the exact wording. It may say that a normal LCD screens main primary colours are red, green and blue, rather than using 'primary' in the true sense. Has anyone seen these and is the picture that much better? It could be good for computer monitors and photographers.

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Ultimate Geek
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  Reply # 408870 24-Nov-2010 13:12 Send private message

Whats funny is that opening this thread produces a sharp quattron ad at the top.

There is a difference between the primary colours on a display versus in paint.   Paint colours are subtractive while display colours are additive.   If you add RGB together you get white,  but you can't mix the three primary paint colours to make white. 

I would be interested to hear from anyone who has seen one and if there is a difference.   I would have thought with the current LCD panels (at least IPS ones) that support 16.7 million colours that there would be little real difference and whether it is better or just exaggerating anything yellow.

It could just be a marketing thing like the ridiculous contrast ratios and the ever increasing hz race the vendors are in. 

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Ultimate Geek
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  Reply # 408872 24-Nov-2010 13:16 Send private message

Thoes ads make me laugh!

"See this blue water... oh wait, the greenish blue water"

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Ultimate Geek
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  Reply # 408873 24-Nov-2010 13:16 Send private message

From wikipedia, one reviewer says:

According to an analysis published in MaximumPC Magazine by Raymond Soneira, president of DisplayMate Technologies, a video calibration equipment producer, Sharp's Quattron technology does not have the ability to show more colors than a standard RGB set. Due to industry-standard color spaces used by content providers, he explains that there is no existing source material that contains the fourth color channel. Any "extra" colors displayed must simply be created in the television itself through video processing, resulting in exaggerated, less accurate color.[7]

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Ultimate Geek


  Reply # 408879 24-Nov-2010 13:25 Send private message

In LIGHT the primary colours are Red Green and Blue (RGB) so the claim is correct. http://en.wikipedia.org/wiki/RGB_color_model





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  Reply # 408889 24-Nov-2010 13:36 Send private message

what i find funny are the people that say "Gee that looks good" and then go out and buy one after seeing it on there old TV Smile

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  Reply # 409100 24-Nov-2010 19:40 Send private message

It certainly won't be accurate when compared to a reference monitor, but like any TV, it'll have a slight skew towards a certain picture type...
Ie, Samaung's drive the reds VERY hard out of the box, to the point that people look sunburnt when you see them. On the Sharp's I've seen, the yellows and golds have popped off the screens, but the reds look a little orange.

You can of course calibrate both Samsung's and Sharp's to achieve your desired look, and if you want to match a test pattern, the Samsung may well give you a more 'accurate' picture. However, with most fully calibrated sets I've clapped my eyes upon, I haven't liked the display :-(
Maybe I have non-calibrated peepers?

I like the styling of the Sharp's though, quite a nice finish and they seem reassuringly heavy... but that'll be down to the glass panel no doubt.



362 posts

Ultimate Geek


  Reply # 409215 24-Nov-2010 22:27 Send private message

tomgeeknz: In LIGHT the primary colours are Red Green and Blue (RGB) so the claim is correct. http://en.wikipedia.org/wiki/RGB_color_model



This I did not know. Cheers for the link. (I always wondered how red+blue+green = white)

However, there are still only 3 primary colours, so their claim of adding a fourth primary colour is a bit misleading.

I do understand it is just maketing hype, I was just curious if anyone else had picked up on this.




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