Hi all,

My model is Samsung plasma PS50C550. From what i gather, Samsung best mode is [/B]Movie and Warm 2 color.
I applied this settings and on some astro HD & SD channels, i experience some screen display color issue as below, which i do not have a term to call it. I have tried adjusting white balance/ Tint/color but somehow can't get away with these issues. i have tried settings from Cnet, Plasmatvbuyingguide and others..but no success.

i) Slight faint Yellowish/Greenish tone to the human fleshtone. I can minimise it by raising Red gain, Red offset. but then the whole color will be too red / pinkish.

ii) I notice slight color banding..or is it solarization effect...something like rainbow effect or color overlapping...on the pictures...I dont know what to call it...but its this kinda effect...albeit quite faint and annoying.

Situation when the issue arises:[

i) I notice these issues only on the warm 2 movie mode. No problem on standard or dynamic mode.

ii) Mostly on SD signals and sometimes poorer quality HD signals from Astro Byond. Especially during dimmer and low light scenes.
On bright scenes...its ok.

However, when the feed is from 1080p / 720p from MKV formats...the movie mode/warm 2 color looks excellent. So, i can safely deduce that this problem only arises from astro feed.

Despite the issues above, i am still hesistant to view on std mode, cause the movie mode gives the best black levels on my set.

I wonder any fellow forumers who own samsung plasma set or other brands faces the same as mine.

Your input and experience is appreciated. Thanks.

Usually we as normal consumers wont like movie setting.. just change to dynamic mode..

Seriously?

Whatever rocks your boat.

Actually i kinda agree with the statement "general consumers" setting it to dynamic mode. Doesn't mean its the most accurate in terms of color but the punchiness is what usually customers judge (and ultimately buys) when they visit the showrooms.

Most of the time, the TV manufacturers diverts the consumer to choose the default settings to dynamic:
1) it's the 1st (top) option in the selection menu
2) Selected by default
3) Reselected as default when you reset you tv to default settings

If manufacturers selects movie setting as default, they will not be able to sell already. Setting to movie mode after you brought it back home will take a lot of time to get used to, which most people don't bother.

Nobody encounter this issue with this model on Astro feed???

Probably just my set is having the issue..or my eyes

What is the general display mode our fellow samsung plasma owners here use? Dynamic, Std or Movie?

Where r u based at? If u r in Penang, I can come take a look at it.

It seems like there is something going on with ur greyscale and colour decoding or CMS settings.

A proper calibration shd help.

Thanks Anfieldude for your offer to help, but i am based in Kuantan.

Have u seen experience this kinda situation with other samsung plasma under Movie Mode Warm 2 with Astro Byond feed?
The greatest issue i felt is with very uneven fleshtone color of yellow /green tinge.

ON proper HD feed like 1080p & 720P from MKV format...it looks great!! That is the confusing part..

Some displays handle 1080i differently from 1080p and might require different calibration.

No I have not calibrated a Cseries Sammy plasma yet.

bro anfieldude, from your previous post since, have you calibrated any Samsung Plasma C series? I just bought Samsung Plasma C550, I copy exact some picture tuning info found from internet, but look green to me.

http://reviews.plasmatvbuyingguide.com/sam...g-pn50c550.html

Can help to educate me this newbie in picture tuning?

Yes, I have noticed this effect. I first noticed it during the World Cup and I believe it is getting worse. It now does it on all channels and dvd's. Shadow areas posterize heavily with green and brown banding once they drop below a certain brightness level. It only happens in movie mode, but this is the only mode with decent black levels and skin tones. I will be returning my TV for exchange.

As far as calibration settings: there is a mistake with the Plasmatvbuyingguide settings published. These are the settings for the old 50B550 model.

I found these settings from the spanish Forodvd site to be the most accurate to my eyes:
Samsung PS50C550 calibration film 18 46 76 10 43 V53R47 calido2 color white colors auto gamma +1 20 25 23 36 28 30

I changed to cell light 15 and warm white1 for tv viewing. Other than that I feel the blacks and skintones are really good (apart from posterization in shadow areas).

On low quality SD feeds, seeing posterization is pretty normal. However, it shd not be excessive. Most digital displays will show some banding if the feed is bad. Remember the feed from Astro is heavily compressed, so the chances of seeing banding/posterization is higher. If it is happening on DVD as well, and in low brightness areas, it is highly probable that ur low end greyscale is set wrongly and it is causing the excessive banding/posterization.

Some displays are better at banding/posterization. I do know that sammys are prone to this, however, u shd not see it that much with proper feeds.

I get the posterization now on all 576p, 720P and 1080i channels. Also 576P PAL DVD. I will check again with 1080P mkv file (Planet Earth) and report back.

My situation is quite the same as plushly is facing. Not on all channels and not all the time it will display the issue, very much depending on the content brightness scene.

Mostly notice on face fleshtone..funny greenish,yellowish and reddish on skin when happens. Then if there is light source shining to walls in the movie during darker scenes..will notice the rainbowish effect.(lack of proper term).

Funny is it only happens in movie mode. Irregardless of either warm 2, warm1, or normal color. Also on bright scenes...the issue is either minimal or not present.

Anfieldude is right...it seems to be effected by content quality is.

The channels or program i noticed it most in Astro Byond like poor HBO hd movies, AXN HD channel programs like 24, NCIS, House..FX HD movies...

Out of two MKV files i tried...transformer2 2 (1080P) & Startrek (720P) seems fine without the problem.

The question now is...where do we go from here .....live with it or is there any fix to the problem. Two firmware updates does not help either.

Is this really a defect or a samsung plasma trait? I am out of wits right now..

As Anfielddude stated, posterization should not be excessive. If the problem is severe enough to impact the enjoyment of your TV viewing, then in my opinion it is excessive and a fault. It has got that bad for me that skintones in even light shadow look like shrek.

I have organised to exchange my panel at the end of the month when more are available. If it happens with the new panel again I will be ditching Samsung.

got screen shot?

Plushly,

Where did u buy it from... u are able to arrange for exchange a new set? From the dealer or direct from Samsung malaysia?
I thought in Malaysia there's no such return policy if not satisfied with the product.

I am in Australia. The dealer I purchased from has a 14 day exchange option if there is a problem (initially it was just severe buzzing). I purchased about 6 weeks ago but they have been unable to get any more sets from Samsung. There seems to be a real shortage of this panel is Australia at the moment.

It's interesting that the sets for the Australian market are made in Malaysia also. I have not heard of the posterization problem being reported from sets made for the European Market (from Hungary) or the US market (I think they are made in Mexico). I have heard of the problem being reported from India and Malaysia only.

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Added on August 3, 2010, 2:54 pmSee here for screen shots:
http://www.hifivision.com/television/11338...50-vs-c550.html

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Added on September 1, 2010, 4:49 pm!!UPDATE ON POSTERISATION IN MOVIE MODE:

Finally got an exchange panel from my supplier.

Since I waited for nearly 3 months for an exchange, I think I can qualify the issues I was having compared to the new panel.

The new panel has absolutely NO posterisation issues from any source. While only having the panel 1 day, not enough time to confirm that it won't recur, it is enough to confirm that the issue is a GENUINE FAULT and if affected I urge you to seek and exchange from either the supplier or Samsung.

The original reason for the exchange, the loud buzzing, also seems to be rectified. The buzzing is there if you mute, but cannot be heard over normal volume. As long as the buzzing doesn't get louder over time, I can live with it.

The color balance seems to be better out of the box as well on the default modes. Perhaps there has been a revision to this model (could explain why there was a 3 month wait for the TV in Australia, also the startup menu seems slightly different from memory), but whatever the reason - I am happy I persevered with this model rather than taking second choice at this stage.

For those that have been annoyed by the reported floating black issue (I was), once the TV is run in and the DIGITAL NOISE REDUCTION is set to AUTO (I worked it out after re-reading the manual), I found the flickering rarely occurs or is noticable enough to annoy.

I will update if any of the issues recur over time.


This post has been edited by plushly: Sep 1 2010, 04:49 PM

sorry to interrupt..got my sammy few days ago..i wan to ask why my PS50C550 can't adjust the Tint (G/R)..it is grayed out in the Picture menu..please help..

Seems all expert always give warm 2 as the most accurate tones for any TV. It is that accurate? For me I still prefer standard or warm 1.

I also never like movie or theater mode which always on warm 2 and reduce a lot much of sharpness. It do look nice when watching in no light room but not for normal daily use.

This post has been edited by Andrewtst: Feb 22 2011, 01:55 AM