Viewing Distance

Discussion in 'LCD & LED LCD TVs Forum' started by swilt1, Feb 14, 2005.

Tags:
  1. swilt1

    swilt1
    Guest

    Products Owned:
    0
    Products Wanted:
    0
    Ratings:
    +0
    Hi All

    Still going around in cirlces trying to decide what size/model LCD to get 26" or 32" but one thing I have come across reading 1000's of reviews is regarding the sitting distance.

    I will be around 8 - 9 feet away from the screen.

    Are there any general guidelines on what size screen you should have for this distance?

    Thanks in advance
     
  2. LcdGuru

    LcdGuru
    Guest

    Products Owned:
    0
    Products Wanted:
    0
    Ratings:
    +0
    I'm 9ft from my 37" and it looks small. Wish I'd saved up for the 45".
    For HDTV I'd see more detail if it was bigger - or if I sat closer.
    Moral: Get the biggest you can afford :lesson:
     
  3. jimsan

    jimsan
    Active Member

    Joined:
    Oct 8, 2004
    Messages:
    1,610
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    41
    Location:
    Dumfries, SW Scotland.
    Ratings:
    +9
    8-9 feet away is OK for a 32". I would recommend sitting 7-12 feet away. Of course it all depends on the quality of what you're watching. Freeview and Satellite would drive you nuts on a 37" from 7-8 feet, however clever your TV is! I would say the 26" is slightly on the small side.

    Jimmy
     
  4. Steve Zodiac

    Steve Zodiac
    Active Member

    Joined:
    Nov 11, 2003
    Messages:
    1,515
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    66
    Location:
    Space City
    Ratings:
    +177
    It may come as a surprise, but the recommended THX viewing distance for a 32" screen is 3.6 feet!

    The maximum recommended THX distance for a 32" is only 5 feet!!

    Further info here.

    A lot of members do seem to regret not buying a larger screen after a relatively short length of time.

    I sit 8 - 9 feet away from a 55" screen and even though I would say that some satellite transmissions can look a bit ropey, many look excellent and on a par with some DVD's.

    Steve.
     
  5. McE

    McE
    Active Member

    Joined:
    Jan 9, 2005
    Messages:
    230
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    18
    Location:
    Luzern, Switzerland
    Ratings:
    +8
    Sorry but I just calculated the distance for my 37GA4E. 4.3m maximum (that's ok with me, I'm sitting 2.8m away from it) but optimal distance 1.3m!! :eek: Sorry but at that distance I can count pixels... no way I would ever watch a movie from such a short distance... :thumbsdow
     
  6. jimsan

    jimsan
    Active Member

    Joined:
    Oct 8, 2004
    Messages:
    1,610
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    41
    Location:
    Dumfries, SW Scotland.
    Ratings:
    +9
    All these THX recommendations are calculated assuming you are watching HiDef sources on projector screens! It is calculated purely to acheive the correct screen width (26-36 degrees, I think) for the ultimate optical impact.

    This takes no account of the fact that most of us are watching televisions which are trying to decipher comparitively crummy signals. Certainly 5 feet away is just OK on a 32" with the very best source on the very best TV. But only just.

    Jimmy
     
  7. ginger

    ginger
    Guest

    Products Owned:
    0
    Products Wanted:
    0
    Ratings:
    +0
  8. neilmcl

    neilmcl
    Well-known Member

    Joined:
    Oct 29, 2004
    Messages:
    6,238
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    103
    Location:
    Nottingham
    Ratings:
    +292
    I read somewhere that NTSC broadcasts were originally developed with an optimum viewing distance of 6 times the screen height. Certainly 2 to 3 times the diagonal is a good rule of thumb for CRTs anyway.
     
  9. jimsan

    jimsan
    Active Member

    Joined:
    Oct 8, 2004
    Messages:
    1,610
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    41
    Location:
    Dumfries, SW Scotland.
    Ratings:
    +9
    6 x 15.5in (height of 32") = 7.75 feet.

    Yeah, I could go with that. I watch from 10 feet and it is crisp'n'clear! I was used to a 28" Widescreen CRT so the 32" seems huge, even at that distance.

    Jimmy
     
  10. neilmcl

    neilmcl
    Well-known Member

    Joined:
    Oct 29, 2004
    Messages:
    6,238
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    103
    Location:
    Nottingham
    Ratings:
    +292

    Actually I think it's 8 times the height of 4:3 and 6 times for 16:9 ratios anything less than this and you start see scan lines and artifacts. Interestingly though the recommended CVD (critical viewing distance) for HDTV is only 3 times screen height. This is all based on CRT sources and doesn't take into account the different viewing characteristics of LCDs or plasmas.
     
  11. LcdGuru

    LcdGuru
    Guest

    Products Owned:
    0
    Products Wanted:
    0
    Ratings:
    +0
    If you want to get technical you can calculate the optimum viewing distance as follows:

    The angular resolving power of the average human eye is 1/60 of 1 degree.

    So the max viewing distance at which your eye can distinguish adjacent pixels is given by:

    distance = pixel pitch / min angle in radians

    The pixel pitch on my 37" Sharp is 0.6mm so

    Distance = 0.6mm / (1/60/360x2xpi) = 2.06m = 6 feet & 9 inches.

    This agrees with my experience: Watching 720p material from 9 ft I feel like I can't see all the detail on my 37". Still it's not such a bad feeling :)
     
  12. McE

    McE
    Active Member

    Joined:
    Jan 9, 2005
    Messages:
    230
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    18
    Location:
    Luzern, Switzerland
    Ratings:
    +8

    what was your dvd player again and what output?
     
  13. LcdGuru

    LcdGuru
    Guest

    Products Owned:
    0
    Products Wanted:
    0
    Ratings:
    +0
    Based on watching WMHD 720p clips from a PC, 9ft is too far - but regular DVDs and Sky look about right from 9ft.
     

Share This Page

Loading...