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Thread ID: 126293 2012-08-19 00:14:00 Computer LCDs vs Tv LCDs Nomad (952) PC World Chat
Post ID Timestamp Content User
1295405 2012-08-19 00:14:00 Hi all, in terms of image quality are their any differences between computer and TV LCDs?

Someone bought a Vivo which is a cheaper one from DSE, 24" LED, Full HD and the 10+ year old Sony Trinitron (flatscreen) CRT is sharper.

Also has anyone tried those wireless video senders? It said it works up to 20m but we found that for 10m upstairs the bedrom it was heavily snowy (doors opened). It worked fine if it was in the dining room while the main TV was in the living room.
Nomad (952)
1295406 2012-08-19 02:12:00 A range of one metre fits quite comfortably in the rating of "up to 20m". ;) R2x1 (4628)
1295407 2012-08-19 04:15:00 Up To usually means line of sight is required to get the stated range. Greven (91)
1295408 2012-08-19 04:17:00 The pitch of the pixels is quite a bit different between tv's and monitors. A monitor is going to appear far clearer close up but probably diminish quickly as you walk away from it. TV's can be particularly frustrating to look at close up, and of course you've got the motion sickness factor due to field of view blocks. 8ftmetalhaed (14526)
1295409 2012-08-19 06:30:00 A decent LED monitor will completely blow away any TV for short-distance performance, the pixel pitch is usually significantly smaller, and for equivalent screen size the monitor will usually support a far higher resolution (though monitors become less size-$-efficient above about 24" atm). For example, Samsung's series 7 LEDs at 55" have a maximum resolution of 1920x1080 and will use either HDMI or VGA D-Sub for PC connectivity. Whereas something like a Dell Ultrasharp 30" LED monitor will have 2560x1600 resolution, resulting in significantly higher pixel density, and thus much smoother image quality. inphinity (7274)
1295410 2012-08-19 07:04:00 A monitor is going to appear far clearer close up but probably diminish quickly as you walk away from it. TV's can be particularly frustrating to look at close up, and of course you've got the motion sickness factor due to field of view blocks.

How does that work then? A large poster printed with poor resolution looks ok from across the street but is pretty gross from up-close, but I can't think of any mechanism other than failing eyesight that would make a hi-res monitor look worse at a distance than it does close up, and what are "field of view blocks'?

In simple terms, motion sickness is usually induced by the motion-sensing part of your ears (the labyrinth canals of the inner ear) being out of sync with what your eyes are telling you, and I can imagine that a person prone to motion-sickness might feel queasy in a movie theatre with a wide screen if their ears were telling them something wildly different to what their eyes were following, but I'm not 100% convinced that something called 'field of view blocks' could give you motion sickness when watching a TV. If it did, then generations of TV technicians would have been puking all over their workshop floor or their customers' carpets, because they not only watched up close, their workshop service was done from the rear while using a mirror to watch the screen, so at various times you had the same scene in view from a front-on perspective (other sets in your field of vision) while also seeing the reverse in a mirror.

I'm curious about this, but willing to be enlightened.

Cheers

Billy 8-{) :confused:
Billy T (70)
1295411 2012-08-19 08:08:00 I use a 32" LCD TV as a monitor on the main home PC, Its awesome, at everything. Web browsing, photo/video editing, gaming. I'll never go for anything else now.

And we have a PC hooked up to a 55" LCD, its also awesome, at everything.
Metla (12)
1295412 2012-08-19 09:26:00 It's the whole seeing movement and not feeling it. If you're using a huge monitor and you're too close to it then you're gonna feel sick if you're doing anything like watchign videos or playing games. Well, potentially. Some do, some don't.
The max size I would go for would be maybe 32 inches on a desk, if you've got a huge desk. Any larger and you'd likely need to get away from it.

As for the 'from far away' thing monitors don't look too flash if you're too far away from them, unless you're dead (ish) in front of them from waht I've seen. TV's can look decent from a far greater viewing angle
8ftmetalhaed (14526)
1295413 2012-08-19 10:12:00 It really depends on the particular TV, my 2nd monitor is actually a 24" 1920x1080 samsung TV and it is as good as many monitors. They need to be set up properly though, TVs are optimised for bright colourful images and that doesn't work well for text.
They also don't scale well, LCD's of all kinds work best at their native resolutions and tend to look terrible if set to anything else.

If using an HDMI input, check if there's an option in the setup for PC monitor - on the samsung it's not obvious that it will change the appearance but changing the name to HDMI PC from the options makes a huge difference to the image quality. If the monitor has a VGA input give it a try and compare it to the HDMI one, if it looks a lot sharper (and probably a lot duller) then the HDMI input is not set up for use as a monitor, not all cheap TV's have the option. Also find out what the monitors resolution is and make sure the PC is set to it.
dugimodo (138)
1295414 2012-08-19 22:51:00 Thanks, I will see if he wants to do a swap for something else.

1. With the AV cables (2 wires) we tested from main CRT TV to the new LED, so side by side with the same image/channel, wasn't as sharp as the CRT both the text on the bottom and the pictures. Yeah maybe that setting wasn't optimised being not HD.

2. The weird thing is that via VGA it does 1920x1080 however on HDMI with the Netbook it gets the corners cut off. I was told it only then does 1600x900 maybe with a black border around the image.

3. I also tried the LED on my PC. On my PC, I have a Dell Ultrasharp IPS at 1920x1200 via DVI. If it was VGA I only get 1600x900 or something. I cannot choose a higher resolution. If I plug in the new LED, as my video card doesn't have HDMI and I don't have a DVI/HDMI converter, I was only using VGA. The words are not very sharp at all. Ie. a PDF document.


I can give it a go again on the Netbook via HDMI and check the settings and compare it to the VGA myself.
On the LED yeah you can switch from VGA input to HDMI if that's what you mean. You have to do that before the image appears.
Nomad (952)
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