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Author Topic: A letter to Santa:  (Read 5779 times)

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Offline Damion

Re: A letter to Santa:
« on: December 18, 2007, 07:33:12 PM »
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motorollin wrote:
Well they have S-Video and composite, and high-end ones have component RGB. Any of these are compatible with the Amiga.

--
moto


Yeah, unfortunately we don't use RGB component, it's YPbPr so you still need some kind of converter. I tried the JROK RGB -> component converter, and it basically sucked (IQ/interference issues). There's a guy here in the States that's supposed to make a decent one though (plug and play with the amiga), I think there's a thread on amigaworld with his contact info. I'll probably pick one up sometime next year... as soon as I find an LCD TV that handles PAL properly, de-interlaces, is a correct aspect ratio AND has an 8 bit/pixel panel, instead of the usual TN garbage. (Another PITA.)

 

Offline Damion

Re: A letter to Santa:
« Reply #1 on: December 19, 2007, 06:55:31 AM »
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HenryCase wrote:
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-D- wrote:
usual TN garbage.


TN? Please explain!


TN = Twisted Nematic, one of the predominant LCD panel types, also the most common in smaller LCD TVs due to the generally faster pixel response vs other panel technologies (less visible "smearing" etc.) and lower manufacturing cost.

Unfortunate downside is, while in theory 8 bit/pixel TN panels could be produced, the are generally (perhaps in all cases) 6 bit/pixel panels, so there's a significant color loss. Most use some form of dithering to achieve what they advertise as "16.2 million" colors (as opposed to the 16.7+ million of "real" 8 bit/pixel panels)... but the color loss and dithering artifacts are still pretty noticeable.

http://en.wikipedia.org/wiki/TFT_LCD

http://www.hardforum.com/showthread.php?t=1039222
 
Now, you have to be pretty careful these days, as some manufacturers deviously advertise 16.7 million colors when that's simply not the case. I have an Aquos that is clearly a 6-bit panel (at all resolutions it supports), though the docs state otherwise. :/

I'll *try* to get a few videos up tomorrow, one showing an image on a PVA panel, and the dithering effects of the same image on a TN type.
 
It's really not a big deal in most cases ("TN garbage" may have been a little extreme), but for an AGA monitor it's definitely not ideal.

@motorollin

Thanks man! I may take you up on that, or at least the model info. I have my eye set on one that I'm pretty sure will do everything I need it to, IF it ever pops up on ebay, LOL.