Sony KD-55AF8 (AF8/ A8F) OLED 4K TV Review & Comments

Discussion in 'Sony TVs Forum' started by Phil Hinton, Jun 28, 2018.


    1. Phil Hinton

      Phil Hinton
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    2. AlanX

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      Nice balanced review, thanks Phil.
      Am I the only one who thinks that, although Acoustic Surface Technology is a very neat solution, there is the possibility that continual panel vibration (especially at the low frequency end and at high volume settings) could lead to long-term mechanical 'fatigue' in the OLED panel itself, and possible early failure?
       
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    3. davejones2

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      That's a really very low peak brightness for a 2018 OLED panel isn't it? I appreciate Sony has a different approach to tone mapping but to drop to below 600 nits from the LG's 740 nits seems a compromise too far for me. That's similar to a 2016 panel and not far off a budget LCD TV.

      Such a shame Sony went with Android OS. Their motion processing in particular is superb and a real point of difference from the other OLED sets but I do wonder how many people like myself rule it out entirely due to the laggy OS?
       
    4. fat jez

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      Is this still limited to the Oppo 203 and APPLE TV 4K as a DV source or or has it been patched to work with all HDMI DV sources?
       
    5. Phil Hinton

      Phil Hinton
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      Apple TV works fine but our LG UP970 is not as yet able to.
       
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    6. Tim2049

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      Hard not to find a few of these 'negatives' a little frustrating. I find Android to be perfectly fine for general day-to-day use & I've not suffered from any dimming whatsoever, regardless of source. Furthermore, in dark viewing conditions (as proper film viewings should be) this tv is MORE than bright enough.

      I appreciate you added a paragraph for context at the end, but I still think that as an 'at a glance' review, an 8 feels misleading given how exceptional the picture/sound is. Everything else should be peripheral really, especially when one of your biggest gripes - the ABL - isn't even a problem for every owner.

      Anyway, it's just an opinion, I shouldn't be defensive about it. I'm utterly blown away by this thing & any frustrations I do have are so insignificant they barely register...

      It's a well written review despite any disagreements I may have with it though. Thank you.
       
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    7. Phil Hinton

      Phil Hinton
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      If you are happy that's all that matters.
      We have to review as a whole and against its peers, but I make clear that our scores might not tally with yours if you are happy with it, or the way you use it doesn't introduce the issues we highlight.

      We try to be fair and balanced, and cover all use cases. ABL is a problem, it might be that some people just don't realise or notice it, and as I stated quite clearly in the review, it doesn't happen with all content.
      Thanks for your comments.
       
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    8. golden phoenix

      golden phoenix
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      i'm going to give a positive negative!...as a long standing member of avforums...the forums over the years are accused of cherry picked samples for review..this review proves as I've always known...that the forums review what they have..unbiased...warts and all!...oh and i hate ABL!
       
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    9. fluxo

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      Sony haven’t fully adapted to the modern era of smart devices. Their general uselessness at software/interfaces dates back to the dawn of creation itself, but it didn’t matter especially in the 80s/90s when devices were relatively simple. That is not so today.

      The fact that Apple have annihilated Sony in every product category where they’ve challenged them may be related to this.

      There are still things to like about Sony’s TVs, but some of the complaints in this review go back years and one begins to lose patience.
       
    10. Coulson

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      This ^^ ^ is exactly what I as thinking along with the fact that I "personally" would never buy a TV that expensive and not connect it to some kind of external sound system.
       
    11. themovierooms

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      I totally agree. They have some of the best picture processing out there but the OS is a car crash and has been since launch, I cant believe they still haven't sorted it out.
       
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    12. Coulson

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      It is pretty awful. The "only" advantage is the ability to side load apps. You would hope that the native apps would be better and updated more often but this isn't always the case. The Sony Blu Ray player YouTube client is better than their TV client for example.
       
    13. themovierooms

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      Strange how the NVIDIA Shield OS works like a dream as well.
       
    14. Coulson

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      Much more powerful processor and I would guess more RAM too.
       
    15. themovierooms

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      There you go then, we have fixed it!? :) Ill email Sony.....
       
    16. fat jez

      fat jez
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      Just as well the AF8 is a budget product and not a premium one or it would be considered under-powered :D
       
      Last edited: Jun 28, 2018
    17. Jonnyb320

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      I have to say I have not had an issue with the OS, but then I tend to use the TV and a monitor. Don’t think I have used you view since I got my A1.
       
    18. Coulson

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      True....... true! :)
       
      Last edited: Jun 28, 2018
    19. Phil Hinton

      Phil Hinton
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      If you use it as a monitor then you won't have any issues with the OS, as we point out in the review.
       
    20. Phil Hinton

      Phil Hinton
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      Good luck, we have been telling them this for a number of years now. ;)
       
    21. lgans316

      lgans316
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      A peak brightness of 600 nits. Wow. I am amazed...NOT...
       
    22. Tim2049

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      "we measured peak brightness to above 750 nits on A8F compared to 660 nits on A1 last year."

      That's from the flatpanelshd.com review. I guess every individual AF8 knocks out the exact same levels of brightness...NOT...

      HDR highlights get piercingly bright in a dark room. I was always a huge fan of plasmas, never liked LCD/LED. If you're from a similar background then your sarcasm wouldn't last long if you saw one of these things in the flesh. Mine is significantly brighter than what I'm used to from top of the range plasma screens. Dream come true to be honest...
       
    23. Curt101

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      Also rtings measured 700 nits on AF8 in HDR 10% window and 831 nits on a 2% window. So either it varies from panel to panel or there is some difference in the way the calibration was done. These are all well respected reviewers so I trust their readings but something is odd.
       
    24. Phil Hinton

      Phil Hinton
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      Remember our peak brightness measurements are in the most accurate picture mode (Cinema Pro) and at D65 white point which is the standard for HDR. The AF8 will go brighter but won't be accurate or pretty image wise in those modes. We make this clear in the review. Also remember that peak brightness is not the overall brightness of a full field image, but a small area of the screen, which is consistent with HDR playback. OLED is also capable of this at the pixel level, and LED LCD TVs cannot do this, but can go brighter. Different technologies with different approaches to the same problem.

      I cannot answer questions about other reviewers and their methods of measurements and the tools they use, but we are transparent in how we do things here and would only suggest comparisons between our results and not other sources as there will be variances.

      This is also a long term review and we still have the AF8 we purchased to see how things go with day to day use for the rest of the year.
       
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    25. Jonnyb320

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      So, given the review, would you recommend having the AF8 or A1 calibrated? Will it make much of a difference?
       
    26. Southy78

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      Phil, as you've got it and other OLEDs in for long term review will you be able to test the brightness loss after 1 year of regular use to give us consumers an idea about how serious OLED pixel degradation over time can be? I'd wager that due to its lower peak brightness it will have a longer life than the C8, especially if the bloody ABL continues to kick in whenever it feels like it! Do you think OLED lifespan should be of concern to us?
       
    27. Curt101

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      Phil, in my previous post I want to clarify that I include you as a “well respected reviewer”. Keep up the good work!
       
    28. jfinnie

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      It's worse than that really, as 600 nits is the WHITE peak brightness. These WRGB OLEDs use the white pixels to boost the white output. With colour content they can't do this and keep colour fidelity, so they can either wash out the colour with white to keep it bright, or. just have much reduced colour brightness than you would otherwise expect if it was a standard RGB mixing display. If the display only hits 600 nits peak white you might expect the maximum faithful red reproduced to be that of a 300 nit set.

      Using a single number to describe the brightness of these WRGB OLED sets is quite misleading as it doesn't mean the same as for other display types.
       
    29. connect

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      Sony should just stick a ‘lite’ TV version of their PlayStation OS instead of using android.
       
    30. fat jez

      fat jez
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      That would make a lot of sense. You can then re-use all the existing apps for Netflix etc. Assuming the processor is the same of course.
       

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