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  1. #1
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    Why do we have 240hz TVs?

    120 is all you need for 3D, so why do we have 240hz ones?

  2. #2
    Joined
    May 2009
    Location
    New Zealand
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    Re: Why do we have 240hz TVs?

    Marketing gimmick perhaps? Cause you know, 240 is twice as big as 120, so it must be close to twice as good or something like that.

  3. #3
    Joined
    Aug 2004
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    Re: Why do we have 240hz TVs?

    Quote Originally Posted by fatlazyhomer View Post
    120 is all you need for 3D, so why do we have 240hz ones?
    All the TV's are 60Hz input (Can do BlueRay) They cannot do nVidia 3D.

    The idea is they interpolate 1 extra screen for 120Hz (or regular HDTV which is interlaced, 2x30Hz) to smooth the action in high speed shots. 240's I guess add 3 interpolated screens.


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  4. #4
    Joined
    Dec 2000
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    Re: Why do we have 240hz TVs?

    all i know is that sports are awesome on them. moviews too!

  5. #5
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    Re: Why do we have 240hz TVs?

    The basic tech isnt bad, but if you turn up the motion interpolation too high, it can give a very "fake" look to movies, often called "soap-opera-effect". The interpolation goes by different names, Samsung calls it AMP, Sony is Motionflo, etc. Used in moderation it can help hide some of the LCD's inherent faults, such as motion artifacts. As TGM mentioned, all the current TV's only accept 60 or 24Hz inputs. One of the original reasons for the 120 is to allow 24Hz from Blu-Ray or DVD's to be evenly displayed on a 5:5 pulldown, which gives an even picture. At 60 hz, the TV would have to display 3 frames, then 2 frames, then 3 frams, etc. This results in slightly vibrating picture, called "judder". Since 24 divides equally into 120 or 240, it can display even numbers of frames, eliminating Judder. 24p gives a more "film-like" effect for movies shot on film, since they are filmed at 24 frames per second.

  6. #6
    Joined
    Jan 2010
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    45

    Re: Why do we have 240hz TVs?

    We must be behind the times here in Australia. We're only up to 600 Hz. Probably because it's about the smallest number that 24, 25, 30, 50 and 60 fps will divide into.

  7. #7
    Joined
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    Re: Why do we have 240hz TVs?

    Quote Originally Posted by unclewoja View Post
    We must be behind the times here in Australia. We're only up to 600 Hz. Probably because it's about the smallest number that 24, 25, 30, 50 and 60 fps will divide into.
    The 600Hz is on plasma, right? That is different, it is called a "sub-field" drive, and has nothing to do with the refresh rate. They advertise that because it sounds impressive. The actual refresh rate is different. For example my Pioneer Kuro is 72Hz, which divides by 24, the Panasonic's are 48 or 96. The 48Hz ones, the G10 series have horrible flickering, rendering 24p virtually useless!

  8. #8
    Joined
    Jan 2010
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    Hamilton, On, Can
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    827

    Re: Why do we have 240hz TVs?

    By "soap opera" effect, do you mean the excessively fluidic motion that can give you vertigo?
    if so, thats why i just keep "tru motion" to low on my 37lh55 (LG 240Hz)
    ..::J.S.L::..


    Email: jsl@jslenterprises.net

  9. #9
    Joined
    Jan 2002
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    Joliet, Illinois
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    Re: Why do we have 240hz TVs?

    Quote Originally Posted by hunter4u View Post
    all i know is that sports are awesome on them. moviews too!
    makes movies look terrible! even m,y buddy and his gf agreed when i showed them the difference on their new 120hz tv.

    doesn't look like a movie at all, looks like you filmed it on your personal dv cam.

    i hear they even have 480hz tvs out or coming out.

    it's all just an arms race where the consumers lose based on confusion and lies.

    my 60hz LG does 48hz for 24p content and it looks excellent.
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  10. #10
    Joined
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    Re: Why do we have 240hz TVs?

    I like 120hz but I don't much care for 240hz. I only like 120 after turning the judder reduction and all those other settings on my samsung to max though. It looks great for sports but yeah movies look weird. Thats because sports are supposed to look real though and people are used to movies being lower rates.

    Personally though as far as it goes I could care less about it though really. My LG I have in my bedroom is only 60hz and it looks just fine in comparison in that aspect. However my Samsung does look 10 thousand times better in the color/quality dept. but that is due to the LED backlighting and not the 120hz.

    Its a marketing gimmick but when has the TV/Monitor market ever not been about gimmicks?

  11. #11
    Joined
    Nov 2009
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    9

    Re: Why do we have 240hz TVs?

    Quote Originally Posted by JSLEnterprises View Post
    By "soap opera" effect, do you mean the excessively fluidic motion that can give you vertigo?
    That is why I haven't gone to an LCD yet. I was feeling sick during some Demo time on some Samys. But the 8500 series sure did look great.

  12. #12
    Joined
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    Re: Why do we have 240hz TVs?

    Quote Originally Posted by Civilian View Post
    That is why I haven't gone to an LCD yet. I was feeling sick during some Demo time on some Samys. But the 8500 series sure did look great.
    When i got my tv, after a few blue-ray movies, and high def matroska rips of True Blood (full 60Htz with the 240Htz tru motion makes it so fluidic its sickening), at random times throughout my day i would have this delayed fluidic motion type feel to real life and it would throw off my equilibrium, pretty embarassing when you're walking through downtown unable to walk in a strait line and people are looking at you funny. :/
    ..::J.S.L::..


    Email: jsl@jslenterprises.net

  13. #13
    Joined
    Mar 2010
    Posts
    5

    Re: Why do we have 240hz TVs?

    I have a sony xbr4 120hz and a xbr9 240hz, not much better.. and i like the older xbr4's speakers way better.
    I Honestly would say the older one was better.

  14. #14
    Joined
    Mar 2010
    Posts
    5

    Re: Why do we have 240hz TVs?

    I think its because you require 120Hz to achieve a smooth 60HZ while in view of 3D content. Therefore, If a 240Hz TV is purchased, then even smoother 120Hz will be achieved.

    Now, alot of people will say that one cannot tell the difference beyond 60, however that is your decision to make based on your observations. Personally, I would go with the 240hz... if I had the money =P

  15. #15
    Joined
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    Re: Why do we have 240hz TVs?

    Quote Originally Posted by darkgoth678 View Post
    I think its because you require 120Hz to achieve a smooth 60HZ while in view of 3D content. Therefore, If a 240Hz TV is purchased, then even smoother 120Hz will be achieved.

    Now, alot of people will say that one cannot tell the difference beyond 60, however that is your decision to make based on your observations. Personally, I would go with the 240hz... if I had the money =P
    vast majority of these 120hz and 240hz tvs only allow input of 60hz. they interpolate the additional frames based on existing frames.

    120 and 240hz tvs are not generally 3D ready.

    on a side note i really don't see 3D taking off as a main stay in the home, not in the current form at least.
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