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Rainbow Effect Observations (Panasonic G10)

3335 Views 19 Replies 11 Participants Last post by JC74, Mar 18, 2010

mantonne06

Discussion Starter · Aug 14, 2009

I bought the Panasonic tc-p42g10 about 2 months ago and love it! My only complaint is that I see the 'rainbow' effect during some movies and sports (noticed it tonight during the preseason NFL game - Steelers white-on-black jerseys made it very visible.)

Here's my question - when I watched part of the game on an older Panasonic th-50px60u (about 2.5 years old) I barely noticed the effect, but on the G10, it was very apparent. I thought the newer plasmas were supposed to handle this better than previous technology? Is this something that will fade over time? I know it's not something with my eyes since I didn't notice it much on the older TV. Also, could this have something to do with the better black levels of the G10? i.e. it provides more contrast so the effect is more noticeable?

Any ideas?

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Post Blue

· #2 · Aug 14, 2009

Some people say that green phosphor lag gets better over time, but my theory is that the other colors begin to decay more slowly over time, which results in a more uniform color cadence and diminishes the "rainbow" effect as the set ages.

I know next to nothing about the technology involved, so take this for what it is.

bbollinger

· #3 · Aug 14, 2009

I am concerned about this as well....this is my first plasma (g10)...it has @ 40 hours of break in slides ran so far...I too notice this effect to an extent, and I am hoping it will diminish over time. Any experts out there feel like calming a noob's nerves on a Friday morning?

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pj325is

· #4 · Aug 14, 2009

I'm no expert but I saw the rainbow effect quite a lot when I first got my set. I have about 300 hours on it now and either the effect is lessening or my eyes are adjusting to it because I don't see it nearly as much.

mantonne06

Discussion Starter · #5 · Aug 15, 2009

Anyone else have any idea?

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TomGreen321

· #6 · Aug 15, 2009

I can see them if I rapidly move my head around wile focusing on the screen. I very rarely watch TV like this so it doesn't bother me.

porksoda

· #7 · Aug 16, 2009

I know you guys are talking about the g10 buy i got a pioneer and i notice the phosphor lag a lot.

I have the 600m which is odd because in store i noticed little to no lag on the 6020 model...

so i think the poster above maybe right that in time the phosphor aging may reduce the phosphor lag.

Note that the 6020 plasma in store that i saw had hundreds and hundreds of hours on it as it has been on display and constantly on since it was released.

Mine has less than 50 hrs so far.

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spazzman90

· #8 · Aug 16, 2009

I had a new 58 Samsung and now a new 63 Samsung. I noticed this on their sets as well. I see it especially with strong purples and even strong blues. Take this for what its worth.

-Jeff

Zues

· #9 · Aug 16, 2009

Green phosphor lag and plasma rainbow effect are two different things.

I've never noticed no green lag on plasma but i do see the rainbow effect similar to dlp. Plasmas with very bright whites will have the most rainbow effect to those who notice it.

porksoda

· #10 · Aug 16, 2009

Quote:
Originally Posted by Zues /forum/post/17006997

Green phosphor lag and plasma rainbow effect are two different things.

I've never noticed no green lag on plasma but i do see the rainbow effect similar to dlp. Plasmas with very bright whites will have the most rainbow effect to those who notice it.

can you explain what each is and what the symptoms of each are?

Zues

· #11 · Aug 16, 2009

Quote:
Originally Posted by porksoda /forum/post/17007028

can you explain what each is and what the symptoms of each are?

Green phosphor lag is like when you are playing a video game, say a first person shooter, and turn fast left or right. Supposedly people see a green trail when fast moving motions happen. I've never seen this, i've seen videos of what it looked like though.

Plasma rainbow effect is like a constant flashing going on with bright scenes or scenes with alot of white in them like sking or snowboarding. If you put on a all white screen pattern it becomes noticeable, but alot of people don't see it. Single chip dlp has the same kind of effect but you can see that with a all black screen, it's like flashes of color comming through the tv. You can't see the plasma rainbow effect on a all black screen though or dark scenes like dlp shows, unless there is alot of white in them. If you don't notice them now there is no need to go looking for what it looks like.

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CCx

· #12 · Aug 16, 2009

As someone who had to return a DLP set due to the rainbow effect giving me headaches and nausea, is the effect on a plasma similar in any way? Do LCD's (LED or non) suffer from it as well? I am in between the LG 55LH90 and the Panny 58" V10 but after reading about this rainbow effect, if it's the same as the DLP I purchased last year there's no way I could get one and live with it.

Thanks for your help.

Post Blue

· #13 · Aug 16, 2009

Quote:
Originally Posted by Zues /forum/post/17007077

Green phosphor lag is like when you are playing a video game, say a first person shooter, and turn fast left or right. Supposedly people see a green trail when fast moving motions happen. I've never seen this, i've seen videos of what it looked like though.

Plasma rainbow effect is like a constant flashing going on with bright scenes or scenes with alot of white in them like sking or snowboarding. If you put on a all white screen pattern it becomes noticeable, but alot of people don't see it. Single chip dlp has the same kind of effect but you can see that with a all black screen, it's like flashes of color comming through the tv. You can't see the plasma rainbow effect on a all black screen though or dark scenes like dlp shows, unless there is alot of white in them. If you don't notice them now there is no need to go looking for what it looks like.

I'm still not sure I understand what you're getting at with the second phenomenon; it doesn't sound like anything I've ever seen. I'll concede that you're making a meaningful distinction in your post, but are you sure that, terminology aside, the original poster means "rainbow" in the same way that you do in your second example?

Zues

· #14 · Aug 16, 2009

Quote:
Originally Posted by Post Blue /forum/post/17007263

I'm still not sure I understand what you're getting at with the second phenomenon; it doesn't sound like anything I've ever seen.

It's pretty similar to dlp rainbow effect. If you never seen what that looks like then it's understandable you never seen the plasma rainbow effect. many people never seen rainbow effect with their dlp's.

Quote:
I'll concede that you're making a meaningful distinction in your post, but are you sure that, terminology aside, the original poster means "rainbow" in the same way that you do in your second example?

Sounds like it to me.

Zues

· #15 · Aug 16, 2009

Quote:
Originally Posted by CCx /forum/post/17007204

As someone who had to return a DLP set due to the rainbow effect giving me headaches and nausea, is the effect on a plasma similar in any way? Do LCD's (LED or non) suffer from it as well? I am in between the LG 55LH90 and the Panny 58" V10 but after reading about this rainbow effect, if it's the same as the DLP I purchased last year there's no way I could get one and live with it.

Thanks for your help.

Dlp is much worse. I also felt sick watching dlp. Not the case with plasma. And no lcd of any tech does not show rainbow effect, but plasmas superior pq compared to lcd is worth living with it imo. Also i believe pioneers show the least rainbow effect because the whites aren't as bright as say something like samsung-lg-vizio plasmas.

porksoda

· #16 · Aug 16, 2009

Quote:
Originally Posted by Zues /forum/post/17007926

Dlp is much worse. I also felt sick watching dlp. Not the case with plasma. And no lcd of any tech does not show rainbow effect, but plasmas superior pq compared to lcd is worth living with it imo. Also i believe pioneers show the least rainbow effect because the whites aren't as bright as say something like samsung-lg-vizio plasmas.

From your terminology i think i am seeing rainbow effect i did some googling on phosphor lag and i saw some videos where everything shifts quickly with a green background.

In any case i see flashes on quick motion i will pay attention of the frame composition next time...

does this reduce over time or will remain same? I can't seem to understand why it is neglible to none when i watched the tv for 30 mins at the local dealer (6020 model vs 600m at home).

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mantonne06

Discussion Starter · #17 · Aug 18, 2009

For those who posted I also see "phosphor lag" in CoD:4, but it's pretty sporadic and not that distracting. It's the rainbow flashing I see when I move my eyes that gets me

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bikrrr

· #18 · Nov 18, 2009

I just got my first HDTV, a Panasonic TC-P42G10, and I've been noticing this effect as well.

For me it happens when I quickly move focus from one spot on the screen to another. It's mostly apparent in high-contrast scenes. I also notice it when I look away from the screen—like looking down at the remote—either way, I see green and sometimes rainbow flashes of color trailing from the scene's bright spots. The actual colors I see depend on the original color of the bright object.

I've been watching Season 1 of Battlestar Galactica (the new series) and it's been driving me crazy. It's especially evident in the hallway scenes since the halls are dark with bright florescent lights spaced evenly apart. I can see green/yellowish flashes of color where the the lights where, when moving my focus from one character to another. Or if I really want to drive myself crazy, I can quickly bounce my focus back and forth between two florescent lights. Yikes!

I only have about 50 hours on my plasma, so hopefully it'll diminish over time, as has been alluded to above. If not, I'll be glad I held back and only got a 42" thinking I'll upgrade in a year or two anyway. For now, even with the flashing, it's still better than the 15-year-old 27" TV we replaced!

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porksoda

· #19 · Mar 18, 2010

I know this is an older thread... but now that i have had my pioneer for a while (that i was experiencing the rainbow effect from), I can say either my eyes have gotten used to it or i cannot see the effect at all...

Total hours on my tv are: 902 hrs.

(thanks to jdbimmer for the great piece of software)

JC74

· #20 · Mar 18, 2010

I don't see anything like that on my G15. And I'm trying extremely hard so I'll have something else to complain about. lol

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