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Tweaky

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About Tweaky

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  • Birthday 04/25/1960

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  1. Are you running your sources directly into the TV, or into a HT amp first? If into a HT amp, check to see if any video up-scaling is being done by the amp, and try changing the settings if possible .[Possibly video output from the HT amp ] My Yamaha HT amp up-scales video, but I have no problems with it doing so, that might not be the case for you......worth having a look at least
  2. There was a reported problem with early purchasers of this TV having problems with the first few software updates, suddenly apps would stop working all together, or partially. The recommended fix was to do a factory reset, and then download a later system update, this happened for around 3 updates in a row. My suggestion is to reset the TV back to factory settings, then let it update to the latest software, and apps. http://eng-ca.faq.panasonic.com/app/answers/detail/a_id/20638/~/how-to-reset-the-tv-to-the-factory-default-settings.
  3. Are you getting this problem on all types of material?.....meaning Bluray/ Free to air/ gaming ? Or as I suspect, mostly when streaming content from someone like Netflix ?
  4. ISF Calibration Photos

    Actually, since I've recently bought a 4K HDR TV [which still hasn't been delivered ] , I've been reading up on the calibration process at Rec 2020 reference gamut. To say there is confusion about the process, and about the standard itself, would be a understatement. And I'm not talking about just end users, I'm taking about seasoned ISF techs, and the guys that write the calibration software. This basically all boils down to the High range of calibration in the 70% - 100%, where the HDR High Brightness starts kicking in. Seems the start of the problem is the lack of standardization of just how many nits any particular movie is mastered to, be it for commercial release, or for transfer to UHD Bluray disc, some are mastered to 1000 nits, others 4000, and reference White for the HDR-10 spec is 10,000 nits. No consumer visual playback device can output 4000, nits, and there is no display on the planet that can do 10,000 nit's, so the whole spec is ridiculous. So what displays are doing to tame this brightness level so whatever the UHDR, is basically the same as a Iris of a projector, by stopping down to gradually reducing this high brightness to a reproducible level, this is being called Tone Mapping, and how hard it kicks in, at what range, for how long is all up to the individual manufacturer, th's why some UHDR TV's appear brighter than others. This Tone Mapping switching in and out also effects the way any meter used for calibration reads the scene, and is compounded by the calibration software not knowing the ultimate brightness [Nit's ] level the display it is trying to calibrate, can go. It seems they are working on it, or at least the guys writing the calibration software are discussing what can be done to at least help lessen the problem. You can read what's going on at the AVS forum > Display Calibration > The Offical ChromaPure 3 thread. To put the problem into some perspective, here is a post [#1244] I've copied and pasted from that thread, by Tom Huffman on the 19th Oct, who writes the software for ChromaPure calibration software. Let me tell you a story. When HDR was first introduced and I got the formula working, I realized right away that I really don't know how to implement it. The problem is that--unlike other gamma standards that define output at every video level by reference to 100% white, which is unspecified--HDR10 specified 100% white as 10,000 nits. No display can come even close to this. The OLEDs don't even reach 1/10 of this. Projectors are doing well if they reach 1% of this! As I had done before I reached out to a few industry insiders asking how this seemingly impossible standard was supposed to be implemented in the real world. I didn't receive any answer to my queries. This was strange. I had asked questions like this in the past and always got some input, but this time nothing. The only advice I received was to calibrate the best you could and just clip signals above the display's capabilities, which in most cases is about 70% video. This is not an ideal solution, but it worked. As time went on I begin to hear a lot about tone mapping. In short, this is an attempt to bend the PQ curve to minimize clipping. The thing is, there is no standard for tone mapping. Its implementation is left up to every vendor and manufacturer. There is another phrase for tone mapping. It is called "Making sh*t up." It then occurred to me that the reason no one had answered my earlier query is that NO ONE KNEW. After speaking to some industry folks recently, I decided to experiment with tone mapping. Based on one suggestion, I tried a flat 2.4 power law gamma. This looked shockingly good. It is counterintuitive at first glance. I mean what is the point of high dynamic range if you are not using high dynamic range? However, if you look at what HDR is doing, almost all of the increase in dynamic range is at the high end. There is some increase at the low end, but it is fairly small. By using a power law gamma you now cover the entire luminance range of the display without clipping. Since the display is in HDR mode you can take advantage of whatever high-end luminance that the display offers, so you increase the dynamic range by 500-600%. The only downside I see is that the low end is considerably elevated from what the PQ curve suggests. For example, the PQ curve specifies 0.32 nits output @ 10% video. A 2.4 power law gamma specifies 2.39 nits @ 10% video assuming 100% video is 600 nits. I am also going to try a hybrid gamma of PQ up to 50% video and then 2.4 power law above that. Since there is no standard, I am free to try literally anything. I'll use whatever looks the best by eyeballing, and I'll offer several options to users to pick whatever they think looks best. This will all be released in the next version along with auto-cal for the Radiance Pro.
  5. Thanks, I was thinking of getting the UD900, but when reading the specs, realized that the only difference between models was in the Audio output capabilities, and since I'm not running a separate power amp, it was overkill for my needs.....besides, very few places, apart from specialize audio/video stores, now actually carry the UD900. By the way, I got a email from Ebay just before I went and bought my TV giving 20% off tech. Tempting as it was, the thought of having to deal with a large TV with a possible problem RE Return, didn't really rock my boat, but others might go for it if Brisbane based. Video-pro-online has the same TV listed at $2947, with the 20% discount and $55 shipping fee, the 65" comes to $2412 landed. http://www.ebay.com.au/itm/like/322527009459?ul_noapp=true
  6. The Sony didn't do 3D, and as would be Sony's want, was over priced for what you get, this is especially true for new released TV's. The only reason I would actually choose a Sony TV is if I were a avid viewer of streamed content, which the Sony processing, I would have to admit, is second to none in doing, but I'm not into streaming at all, so the Sony again fails my needs. I could understand the premium priced payed if Sony actually had a decent service center in Aus, but as I well know, it doesn't [OK, it's not the only brand that doesn't, but then again, they aren't charging the same prices] As for OLED..there is a lot of jiggery pokery going on with some OLED set's to make the Blacks seem Blacker than they actually are, or at least to boost the perceived contrast levels. This is usually to boost the Blue levels [which makes a screen seem brighter that it actually is].....I thought Samsung were bad for this generally with all their TV's historically, it's how they tune them, but with the advent of OLED, they are all at it to a varying degree. Once calibrated, and rid of the huge Blue boost, OLED's don't seem to have the WOW! contrast range that people are paying for, they are actually paying for the equivalent of a 3rd generation Plasma. There is also the banding issue that 'Can' pop up with OLED......I don't want to risk the TV lottery and find I get one that suffers this, and then complain only to get a reply back from the manufacturer that is 'Within Specification's' so I'm lumped with a dud. As for calibration itself, well the Sony's can be calibrated well, but nowhere as well as a recent Panasonic. The Panasonics adjustments are PRO level......why other manufacturers are scared to make these adjustments available on their TV's sort of stinks of 'Copy Right protection', where if they would give you these adjustment features, you would be able to make a Sony look like a Samsung/Panasonic etc, which in the Sony marketing peoples world, would undermine the dialed in 'Look' of Sony Tv's generally [Pushed to the Red ] [Samsungs pushed to Blue] [ LG pushed to Green -so they look brighter than TV's placed next to them] As for my purchase of the 65EX780a, that went ahead yesterday, [After the salesman tried repeatedly to sell me a OLED , even though I said I knew exactly what I wanted as soon as I walked into the store]. The general thought among sale folks is Panasonic is thought of, at least at the moment, both with sales staff, and in the consumers minds, as equivalent to NOKIA. A once great brand that has fallen from prominence. Subsequently, I was told that they keep very little Panasonic TV's 'In Stock', so I'm having to wait to get mine that is being transferred from a different store, on Monday. I must admit, buying a perceived 'White Elephant' does have it's virtues, I got a further discount on the already low price [another $50] so the 65 cost me AUS $2740, and since I bought it from Bing Lee, they gave me a voucher that all buyers of 4k Tv's get from them, equal to 10% of the purchase price, which I use towards getting a Panasonic UD 400 UHD 4K disc player , which ended up costing me another $125....all up TV and disc player came in at under $2900, which is $100 less than JB for the TV alone...Happy Days!
  7. OK cwt. The link to the Valerian movie [Is that region free ? I'll answer questions to other posts ....need sleep
  8. No, the Sony didn't even register in the possible purchase radar, neither did any of the Samsung's or Top of the range LG's ....sorry, but IMHO a lot of the range of TV's on the market ATM are crap. OLED done wrong [As most is ATM, unless current TOP Tier sets ] is not worth having. Little point spending big $$ on a screen that can't be calibrated well, or at all [Hisense screens CAN'T BE CALIBRATED - ] See the video below explaining why.....REC-709 is going to love this video It's not a matter of saving money, [I could still purchase JVC 9500 as well] but currently, I want to find out what the "Bang for Bucks" I will get from this Panasonic LCD.....and I think you, and the rest of the forum members would be equally as interested as well. Especially since the DTV forum merge
  9. I intend to buy one of the Panasonic's on the weekend, a 65EX780, I was considering the 75EX780 [Especially since over the last few days it has been at a special $1000 off -ended today damm it], but after getting the tape measure out realized it would have commandeered my small lounge room, a 65" is pushing the boundary already.[That's the beauty of a PJ, it takes up little space, and a drop down screen is invisible when not in use] I had been gradually getting enough spare cash put away to get a JVC X7900 PJ, but after further thought came to the conclusion that in all honesty, I no longer use my current PJ nearly enough [at least in the Summer months] already to justify replacing it, and I'd be better served getting a larger TV than I currently have. The new Panasonic 65EZ1000U is a very nice OLED, and quite frankly I'm still slightly tempted to get one, but it's around the same price as the JVC PJ, and again being honest, doesn't do what I need of a TV. What has sold me on the new Panasonic LCD displays are several things. The Black levels achievable on these TV's is very very good already, not quite OLED as setup out of the box, but pretty close. Have a look at this YouTube video from Panasonic Japan showing how the panels work on the EX780 [in UK- 750 series], then go and have a look at one in a store.......it's true, they do work as well as this. .....it's technology like this that is really blurring the lines between 5th/ 6th generation LCD and 2nd 3rd generation OLED, it's very close folks, and IMHO the huge jump in price for OLED over this particular LCD type is hard to justify, it's in the salesman's ball court, and probably why I see these Panasonic LCD TV's playing back content with a really washed out picture so people go for the OLED [bigger sale = bigger commission]....get a hold of the remote if you can, then see what it truly can do. It's when you get into the menu and have a look at the enormously full featured PRO level calibration controls these TV's have [Same as on Panasonic's new top of the range EZ OLED's]....This is drool inducing to somebody like me who has their own calibration gear, I can tweak this TV within a inch of it's life and get it looking better than any other LCD on the planet.....I think the forums resident ISF Tech- REC 709 would agree with me, as he was asked by Panasonic to come in and calibrate the TV's in their showroom.....Honestly, it's like giving a calibration guy a Ferrari to drive. You can adjust RGB & YCM and luminescence for each ! Amazing !! Ok, I'm calming down.....the other major factor for me at least is, this is the ONLY 3D TV on the market.....3D didn't sell that well because it was done badly at first [Hell, I even told Sony that at one of the first showings of 3D in OZ], which is more the pity, because when done well, like it is with these Panasonic screens, it is well worth having....plus in the ensuring years, I bought a later generation Sony TV that has done 3D with some respectable ability, which has lead me to a collection of close to 150 3D Bluray Discs, so I want to have something to play them back on....seems the yet to be released EX780 successor, at least in Japan -EX850,will not have 3D http://news.panasonic.com/jp/press/data/2017/08/jn170828-3/jn170828-3.html ....sometimes these models are Japan only, so who knows...personally I think Panasonic would be mad to stop making 3D displays, as they have been given the market to themselves......so if you are into 3D, now the time to get one, just in case Panasonic does drop 3D with the EX850 range. Gaming Mode...this is a low 20-22MS....I do a fair bit of gaming, so this is important to me. OK, I'll be honest, I'll be sacrificing somethings by getting this TV.....well as if what I read on the Internet is true ! 1] No Dolby Vision support, not now or in the foreseeable future , it's a licensing deal thing.....is it going to make that much of a difference in the long run?....I doubt it, as it varies from movie to movie....I mean once you start watching a movie in 4K HD it's going to 'Hopefully " sweep you away for the ride, and your not going to notice that last nuance of difference in picture quality in the first viewing at least...subsequent viewings...who knows, and to be honest, I'll doubt you will care in the long run.....it's purely a minimal difference in local contrast thing anyway, and highly dependent on the films mastering on how it looks. 2] Low 4K NIT's reproduction....Yep, this 'Could be a problem', but I sort of agree with Panasonic thinking of that the vast majority of what you view on the TV will not hit the brightness ceiling of the TV's reproduction headroom, even 4K disc's.........see the whole 'How Bright can Your TV go" is similar to how many watt's has your Amp got......both might be a massive figure, but I guarantee that in either case, in normal day to day use, even hard use, your Amp would seldom be asked to put out more than 5/6 watts continuous, likewise 350-300 nits on bright scenes with a TV screen....so why the 1000 nits+ and above specs?...well it's to pull you in thinking you need it....you don't. It's color reproduction, especially in the low region that you want......very hard to do, and also hard to calibrate at those levels, as most consumer displays oversaturate at the below 20% IR range = Muddy Blacks......hence my love of the calibration potential of these TV's 3] Possible Judder problems....well both OLED and LCD/LED are 'Capture and Hold" screen refresh technologies.....this is one of those things that a certain group of people [usually of a similar 'User Group' ] finds something going amiss with their screens....as usually with a group, a lot will swing in and complain when they find something amiss [Usually because they copy each others settings rather than doing any testing themselves], but seldom report back when a solution has been found [Which is usually user selected settings conflicts/problems ] so I'd take any reports about this with these Panasonic EX series with a grain of salt......the other thing is, after reading many a post about this problem at many a different forum, it nearly always comes down to 'Streamed Content' and the various [and seemingly ] Varying standards.....I'm not surprised, it's the internet, it's software, it's never static, it's always evolving....I can't keep up with it, that's why I try to avoid being tied to it as a user when possible......which is basically all the time for me, so don't ask me to trouble shoot for you, you might as well go to the nearest old peoples home and ask a resident there. Anyway, I will test the new TV when out of the box and post the results of it's standard settings, and you will be able to see how they vary from spec.....I'll do the same a 100 HR's later, when the screen and circuitry has had a chance to bed in, then test and re-post results. Depending on interest shown at the forum, depends on what I post back regarding 'Before/after' calibration shots........up to the forum
  10. ISF Calibration Photos

    If you go back to page 6 of this thread and read my post from August 12, which is basically the same question, but a bit more technical, you can read REC 709's reply directly after it on August 16
  11. Isf Calibration Basics

    I have advised other to DIY calibration, but it seems too scary a thought to actually do it for most. Funds spent proportional to gear is the major factor.
  12. Epson TW9000W - fault

    Seems like a fair price for a repair, hate to see what a similar price would be for a Sony PJ.......Sony has had MAJOR problems with repair centers [still has from what I hear], mainly because they are all out sourced, 3rd party.
  13. Post some pics thread...

    Looks like you used a ring flash, I can just see a doughnut in the Cat's iris. The way you have sharpened it selectively really gives it impact , without becoming menacing Have a look at the same shot again, but just squint while doing so, you'll see where you can burn in at places [They will be obvious] and you could make that shot something really special. Getting my camera at ATM, looks like there could be a big thunderstorm about to happen over Sydney .....Hoping, it's been ages since a decent one happened.
  14. I think it's more a matter of long term PJ owners who know the different technologies involved, looking at this new Benq and see it's been designed by Benq's marketing department to have a product at a certain price point, nothing more. I can only suggest people keep there $2500 in their pockets and save up till you can get something better, nobody NEED'S a PJ, and not having one is better than having a bad one. What's the point of having a huge picture if it's going to look rubbish? There isn't one, so don't do it.
  15. Oled

    Usually if a new model is released it's a replacement for a current one, and if they replace one, they usually replace all the models in that particular range. Some ranges of TV can stay in a manufacturers catalogue for a few years before they are replaced with a new model, IMHO it's those TV's that are best to buy when being discontinued, mainly because it is far more likely to be able to get it repaired if something does go amiss with it, just because in theory at least, it's far more probable that there will be spare parts available for it, where a TV that is only in a manufacturers catalogue for a year, won't. Plus the fact that there is bound to be some feedback from owners of that model TV somewhere on the net, so if it's a dud, you'll be able to find out about it. It depends on what the manufacturers see as any particular range of TV's needing a revamp, sometimes a range of TV's will be replaced purely on a change of cosmetics and very little to nothing being changed with the actual screen or electronics. Other times, like Sony's 2017 models, it was basically dropping 3D support on all their TV's, and them bringing out OLED models, [something you won't be seeing Samsung doing any time soon]
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