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LocDim
09-28-2011, 09:35 AM
Hi
I have just got the new 21:9 cinema tv (58pfl9956t). Software is 0.14.38.6. I have the Local dimming on standard, but it seems to work way too hard.
Coming from a Sony tv (hx900) where the local dimming worked perfectly, I have to say I am disappointed with how this works on this Philips.
On the Philips sometimes I can actually see it work, especially when there is subtitles involved. And for me that is often, maybe 90% of the time. Often when a subtitle is displayed it is too bright, and at the same time a different part of the picture is dimmed (often on the top of the picture). Another example: Sometimes in indoor scenes with a wall of single color in the background, part of the wall is flickering up and down in brightness. Like if the local dimming can't decide. It is very annoying. On the Sony I could not see the backlight actually working like this. It was much much more subtle.
I hope I have missed a setting or something. Is there maybe a way to adjust the effect of the local dimming? I mean other then the three modes. (I have tried them all.)

I think there should also be a different mode. A "light" version where the blacks are dimmed carefully, but the rest of the picture stays at the original brightness level. You see, all I want is a good blacklevel and NOT the crazy "bright pro" increasing the contrast/brigtness.

petasis
09-30-2011, 01:40 PM
Can you try with the "typical" local dimming setting?
The "best picture" one is quite aggressive.

LocDim
09-30-2011, 01:48 PM
I have the Local dimming on standard, but it seems to work way too hard.


As I said, I already have it on standard. On "best picture" it is even worse.

btw. I think I will just return it. Because there is no reply from Philips and I do not take the chance to wait any longer.(return policies/rules).

durtro
10-01-2011, 07:10 PM
Yes, philips dynamic backlight simply doesn't work well. I suffer from exactly the same problems. The image is always flickering on most sources. The effect is worse when there isn't much color variation like for example a face with a gray wall as background. The simple facial and head motion causes flickering in backgrounds. For some anime it is especially bad and I simply turn off the feature...

petasis
10-02-2011, 10:12 PM
Have you tried all local dimming variations, or only best picture?

durtro
10-03-2011, 08:24 AM
Have you tried all local dimming variations, or only best picture?

Yep. In fact what I've done is turning it off on personal/custom smart picture setting so I can easily go to a smart picture set without dynamic backlight. The problem is especially visible in some type of images. I've seen anime and some tv series where the effect is everything but subtle with a clearly visible "blink" every few seconds due to subtitles. On the other side I've seen many 1080p movies where the effect is barely visible if at all but on those sources I put the subtitles on the black bars of the movie and in anime and tv series that is impossible since the frames span through the entire tv screen. As a rule I have it on in movies. On tv series and anime I see how it goes and many times I've to turn it off because of the highly annoying "blinks".

The effect is worse when the image has low color variation and something bright moves or appears over that background. In that case the dimming sort of propagates through...

Freddy
10-03-2011, 10:07 AM
As mentioned earlier, this seems like the exact same problem as with the PFL9705 series:

http://www.supportforum.philips.com/en/showthread.php?1265-Dimming-problem-every-time-subtitles-appear-on-32PFL9705

Very disappointing to see it again on even the latest top model!?... :(

By the way, now that you're deactivating Dynamic Backlight for some programs, you may have noticed how difficult it is to get the same general picture quality as when it's activated. Maybe my thread over here:

http://www.supportforum.philips.com/en/showthread.php?1989-Daylight-setting-manual-for-9xx5-series

can help you with that, as I guess the settings are still pretty much the same.
Just let me know your results! :)

petasis
10-03-2011, 10:53 AM
Yep. In fact what I've done is turning it off on personal/custom smart picture setting so I can easily go to a smart picture set without dynamic backlight. The problem is especially visible in some type of images. I've seen anime and some tv series where the effect is everything but subtle with a clearly visible "blink" every few seconds due to subtitles. On the other side I've seen many 1080p movies where the effect is barely visible if at all but on those sources I put the subtitles on the black bars of the movie and in anime and tv series that is impossible since the frames span through the entire tv screen. As a rule I have it on in movies. On tv series and anime I see how it goes and many times I've to turn it off because of the highly annoying "blinks".

The effect is worse when the image has low color variation and something bright moves or appears over that background. In that case the dimming sort of propagates through...

Is there an option to change the colour of subtitles to gray instead of white?
I am using a PC for watching movies, and if the subtitles are not white, helps very much...

petasis
10-03-2011, 10:54 AM
As mentioned earlier, this seems like the exact same problem as with the PFL9705 series:

http://www.supportforum.philips.com/en/showthread.php?1265-Dimming-problem-every-time-subtitles-appear-on-32PFL9705

Very disappointing to see it again on even the latest top model!?... :(

By the way, now that you're deactivating Dynamic Backlight for some programs, you may have noticed how difficult it is to get the same general picture quality as when it's activated. Maybe my thread over here:

http://www.supportforum.philips.com/en/showthread.php?1989-Daylight-setting-manual-for-9xx5-series

can help you with that, as I guess the settings are still pretty much the same.
Just let me know your results! :)

I think the fact that Philips TVs do not have a dedicative backlight control (not one mixed with contrast) is a big disadvantage. It would have made watching without local dimming much easier...

durtro
10-03-2011, 12:50 PM
Is there an option to change the colour of subtitles to gray instead of white?
I am using a PC for watching movies, and if the subtitles are not white, helps very much...

Done that and indeed it helps in some cases but not all. I use a grayish yellow with black borders in subtitles but in many sources there is still that problem, including 720p hdtv tv series and anime. In movies not so much but I put the subtitles in the black border so...

Gerrit
10-19-2011, 12:53 PM
I'll buy this screen as soon as this problem has been solved!!
So please keep on posting and I do hope Philips comes with the announcement they tackled the bug!

Gerrit
10-25-2011, 10:28 AM
A dutch owner of both the cinema 58PFL9955 and the cinema 58PFL9956, both equipped wit local dimming, tells me that the older 9955 model does not show this problem.
An other question is of all 9956 screens of this model do face this problem or are there perhaps manufactory series of this model that are free from this bug? Any screen of the 9956 model without this problem?

Gerrit
11-08-2011, 08:42 AM
There has been a long time of silence on this topic, is it solved??????????????????

kookaburra
11-09-2011, 08:43 AM
Dear Sirs,

I am the owner of a brand new TV 58pfl9956, that I received just a few days ago.

I have been experiencing some difficulties with the local dimming, it does not work properly, and its performance does not seem any logical criteria, with continuous variation of intensity. I have even had to turn it off in order to achieve a minimum of clarity.

I have been informed that several owners of this TV model (21:9- 2011) are experiencing the same difficulties, and I would like you to confirm me If you are aware of this problem and working to solve it out; were it not so, I would be forced to return the TV to the seller, as, due to the aforementioned problem of the local dimming, my TV is very far from offering the high image quality and excellent performance that I had expect of a state of the art TV.

I eagerly await for your answer, thanking you in advance for your interest.

Best regards,

petasis
11-10-2011, 08:10 AM
Can you try with settings similar to these?

http://www.supportforum.philips.com/en/showthread.php?3037-to-philips&p=16330&viewfull=1#post16330

kookaburra
11-10-2011, 10:02 AM
not solve the problem:(

kookaburra
11-14-2011, 08:33 AM
My problems local dimming

http://www.supportforum.philips.com/en/showthread.php?2923-Your-experiences-with-FW-v0.14.84.0-for-8000-9000-and-21-9-series-(2011-models)/page4

Freddy
11-14-2011, 12:53 PM
Hello kookaburra,

I've watched your videos and they really are shocking... :( Could you maybe post the original video fragments that you used in these tests, so others can use the exact same ones to test theirs?...
Thanks in advance!

Freddy

kookaburra
11-14-2011, 03:00 PM
Of course, I will post them as soon as possible. I hope they may be useful!

kookaburra
11-15-2011, 07:33 AM
Hello, Im posting the fragments Ive used to test my set so that anyone who is interested may also test theirs. Please post the results so that both Phillips and any other owner can be informed of this issue. Good luck.

Star Wars. Episode I: The Phantom Menace. 2min, 40sec
http://www.youtube.com/watch?v=d9vkZIhpS8E

American Psycho. 21min, 30sec
http://www.youtube.com/watch?v=XBatVsHrZtA&feature=related

Gerrit
01-14-2012, 11:03 AM
There has been a long time of silence on this topic, is it solved??????????????????
This was my question two month ago, I still want to buy this screen as soon as the problem of the bad working local dimming has been solved, so my question is the same: There has been a long time of silence on this topic, is it solved??????????????????

Cinema 21:9
01-14-2012, 01:28 PM
No it's not!

kookaburra
01-14-2012, 05:15 PM
The local dimming problem has worsened with the latest update

google translator

kookaburra
01-14-2012, 05:18 PM
I hope that is resolved in the future. I have the 9956. The above 9955 does not have this problem

google translator

Cinema 21:9
01-15-2012, 09:15 AM
Yesterday I was at a friend who had bought at Christmas, at my suggestion a 46 "Sony TV.
After yesterday I had examined him for several hours at the unit, I was really impressed! The device has only Edge LED with global dimming, but still the picture was absolutely great, no pumps, no stains, no banding, great contrast and black level, liquid NET TV, everything is perfect!
Has cost in view of the device under 1000 €, it's almost ridiculous what we have to bear with the devastating failure for Platinum Cinema picture!

(Google Translator)

Espen000
01-16-2012, 07:50 AM
I think the most important thing is that those of us having this issue log the cases to Philips support.

Do not only wait for a firmware update.

This way Philips will get a better overview of the impact of the issue and the more we are the more resources they are likely to use solving the issue!

:)

21_9_78
01-21-2012, 09:57 PM
Hallo Fellow local dimming victims

I feel I also have to add to this. I have owned this TV for 3 weeks and it is a huge huge!!!!1 disapointment that Local Dimming doesn't work properly. I looked many other products by other brands where this is not a big problem. I have made sure the tv has the latest firmware and the correct settings. Its embarrassing haveing problem over to look at my new tv when it doesnt work the way it should :(

I also have purchased the BDP9600 to get the best possible picture when watching movies. I am sorry to say ,but I am not impressed over the firmware updates by philips. i bought the TV and bluray plauer because they have the option to upgrade from the internet and this does not work! I hope who ever works at philips that this feature is fixed soon and maybe quicker menues they are very slow.

petasis
01-23-2012, 05:43 PM
Have you tried setting "typical" as the dimming function, and keep contrast above 70?

21_9_78
01-26-2012, 08:46 PM
hi

is there anyone reading this forumm who has any idea when philips will release the next firmware release that maybe fixes toe dynamic backlighting issue? I have logged the same problem like the rest of you, and I think they misunderstood me. Because today i received a mail from support where they say had talked to a technician who reckons there is something wrong with my tvs hardware. when i logged the problem with support i linked to to some of the youtube which very clearly shows the problem. has anyone else been asked by philips to send in the tv to be serviced?

Vilnix
02-07-2012, 02:04 PM
I hope that is resolved in the future. I have the 9956. The above 9955 does not have this problem

google translator
That's not true. I have the 9955 and also having this problem.

Cinema 21:9
02-07-2012, 02:31 PM
To rectify it. I had a 9955er 9956er before, and here there were also problems with the Localdimming. These problems were shown in a Wabern the LED cluster with dark gray contrast-free images.
In this new 9956er Wabern is less pronounced, but this one has an absolutely atrocious light / dark pumps, which the old Cinema 9955 did not show so much!
Both of these errors are expensive high-end TV's not worthy!

(Google Translator)

kookaburra
02-09-2012, 09:03 AM
That's not true. I have the 9955 and also having this problem.

II can assure you that your problem has nothing to do with the 2011 model. I have the 2 models and the problem of local dimming we are denouncing the owners of 2011 model not exist in the 2010 model. In the same forum as well as other specific to this model, you can see that all users who have had the 2 models indicate that this problem does not exist in 21:9 in 2010.
Best Regards

Google Translator

Vilnix
02-27-2012, 05:07 PM
II can assure you that your problem has nothing to do with the 2011 model. I have the 2 models and the problem of local dimming we are denouncing the owners of 2011 model not exist in the 2010 model. In the same forum as well as other specific to this model, you can see that all users who have had the 2 models indicate that this problem does not exist in 21:9 in 2010.
Best Regards

Google Translator
That's again, not true. I've just made a video with a movie which illustrate the problem very good. Best example is at 1:26 but exactly, it's everywhere...

click (http://www.youtube.com/watch?v=QR_Fv10A4OQ)

kookaburra
02-27-2012, 08:23 PM
Not the same problem. The problem is only when samples are no subtitles. In 9956, the problem is always present, as if they were flashing. I'll give you three examples. In the first look at the bottom wall, the second looks at the sky and the third looks like a disco.

GOOGLE TRASLATOR

http://www.youtube.com/watch?v=uaRHeh9vkIU

Vilnix
02-27-2012, 08:27 PM
Not the same problem. The problem is only when samples are no subtitles. In 9956, the problem is always present, as if they were flashing. I'll give you three examples. In the first look at the bottom wall, the second looks at the sky and the third looks like a disco.

GOOGLE TRASLATOR

http://www.youtube.com/watch?v=uaRHeh9vkIU
I'll make you an other example tomorrow. This is the same problem but in 2 different facets. You're problem is accured by the same faults in the dynamic backlight as mine...

kookaburra
02-27-2012, 08:53 PM
i'll make you an other example tomorrow. This is the same problem but in 2 different facets. You're problem is accured by the same faults in the dynamic backlight as mine...

because i was not in my 9955 this problem. You have the right from the start or from any firmware update?

Google translator