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Old 04-10-2013, 01:40 AM   #1
jyeh74 jyeh74 is offline
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Default Active 3D vs Passive 3D

This must be a Sony thing, but some of their TVs are "active 3D" while some are "passive 3D" No other brands distinguish this. 3D is 3D.

Anyone know if there is a difference?

Compare the XBR 65HX950 for $5200 (active 3D)

http://store.sony.com/webapp/wcs/sto...52921666483159

Vs a new one, bigger KDL70 R550A for $2600 (passive 3D)

http://store.sony.com/p/70-inch-HDTV...n/p/KDL70R550A

Then they have "dynamic edge lit" vs "edge lit"
Can someone help???
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Old 04-10-2013, 04:58 AM   #2
Villiam Hayes Villiam Hayes is offline
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I think active is better,you are seeing full 1080p for a start which you don't get with passive.

Edit: if you google 'dynamic edge lit' vs 'edge lit' you should get some answers.
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Last edited by Villiam Hayes; 04-10-2013 at 05:05 AM.
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Old 04-10-2013, 12:04 PM   #3
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Active 3d and passive 3d are heavily different!
With passive 3d you totally lose the High Definition and you return back to even a LOWER resolution than SD: just 540 lines rather than 576!
This happens because to avoid using battery-activated glasses which synchronize with the TV SET to send to each eye a different image, simple polarized glasses are used, and both images for both the eyes are played on the display at the same time: to separate them and send each one to the proper eye, they are interlaced, so 540 lines are for left image and 540 lines are for right image.
But that's not all: each eye sees, between two image lines, a totally black line (containing info for the other eye); to prevent eye from viewing this undesired line, I think observer must be way far from the screen, enough to get three lines merge into one; so I think the actual final resolution without black lines is even a terrific 540/2=270 lines! (or 1080/3=360 ?)

These are just my calculations & guess, I should do some testing.
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Old 04-12-2013, 08:42 AM   #4
AmrlKJaneway AmrlKJaneway is offline
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Passive fans usually find active's flicker is uncomfortable, or the glasses are heavy. Passive does away with both of these, and most say that they sit far enough back from their sets to not notice the drop in resolution.

I have only seen passive at the theatre. I chose active for my LCD monitor, plasma television and DLP projector (where passive is not an option).
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Old 04-12-2013, 12:32 PM   #5
jyeh74 jyeh74 is offline
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Sony is releasing a 70 inch TV next week. A TV this big we might notice uneven blotches being edge lit led display. Drop in resolution is bad.
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Old 04-12-2013, 04:03 PM   #6
jumpjack jumpjack is offline
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Quote:
Originally Posted by AmrlKJaneway View Post
Passive fans usually find active's flicker is uncomfortable, or the glasses are heavy. Passive does away with both of these, and most say that they sit far enough back from their sets to not notice the drop in resolution.

I have only seen passive at the theatre. I chose active for my LCD monitor, plasma television and DLP projector (where passive is not an option).
Passive is much better at the thatre due to the wide screen and to the fact that it's not interlaced: I think both images are projected at the same time with different polarization (or different color).
TV screens are not polarized as they do not reflect, they emit. And to be far enough from them... you're so far that screen appears veeery small!
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Old 04-12-2013, 05:38 PM   #7
srinivas1015 srinivas1015 is online now
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I have both active and passive and this is what I think (briefly):

Active : More foreground placement to the point where almost everything is in the living room (I'm not talking about pop outs. Stuff sticks out of the screen.). Picture is more relaxing for me. Picture is sharper with no interlaced lines. Flicker is not an issue for me as I view Active 3D on a projector, not a TV.

Passive : Hardly any foreground placement. Overall image is pushed into the screen. Picture is less relaxing compared to active. Picture is much brighter than active though there are visible black lines when viewed at 3 feet. Eyegear is more comfortable, especially with clip-on glasses.


Both have pros and cons and I'm glad customers have a choice based on their needs. We've come a long way since the anaglyph days.
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Old 04-12-2013, 05:47 PM   #8
jumpjack jumpjack is offline
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Quote:
Originally Posted by srinivas1015 View Post
We've come a long way since the anaglyph days.
I've just ordered a china-thing capable of converting 3d side-by-side to 3d anaglyph; it should be here within a month, I'll let you know if it is worth the 40$ I paid for it... Anaglyph should allow 1080P FullHD 3d! But, I guess, lower "color resolution".
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Old 04-13-2013, 07:32 AM   #9
Taygan315 Taygan315 is offline
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To the OP.....there is also another option: discrete 3D. Sony (to my knowledge) is the only brand available. It called the 3D Personal Viewer. Couple of members here have one (one that I know does is Paul H) and they praise it. It's a visor you wear and the 3D (using OLED tech at 720p) goes to each eye. Suppose to give you the feeling of watching a 150' screen from.....16' away (?). Very immersive. You can find more info about it on Sony's website. Cost is $800.
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Old 04-14-2013, 12:28 AM   #10
Lnds500 Lnds500 is online now
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Quote:
Originally Posted by keb33509 View Post
This crap again? It's not even going to matter when 4K is out. All panels will be passive.
You still here? Still haven't improved much I see.

It matters to people who care about technology, if you plan on passively accepting what the industry dictates you to buy then this thread is clearly not for you.
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Old 04-14-2013, 01:12 AM   #11
harlowek harlowek is offline
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I have the Panasonic ST-50 55 inch Plasma which is active 3-D and have had it ISF-certified calibrated, which took over three hours to do by the techs. And my neighbor has an LG 55 inch passive LED 3-D his is not calibrated but has used on line tools to get as close as possible. Has a nice 2-D picture.

We have compared the two using the exact same movies. And he and I believe the active is so much more "alive" and with greater realism to the 3-D experience. Now on the glasses. My active ones weigh less than an ounce and his weigh about the same..mine 27 grams his 26 grams.. We truly can't tell the difference in weight. But image wise night and day. Mine has a richer picture that gives more of a sensation of "there". We can also both see the resolution difference. It is NOT the pop of 3-D that matters as so much as the depth. Even my girlfriend and his wife can tell. And they are not video and sound geeks like us. I have my speakers aligned with lasers so they are within less than 1/8 of inch of a difference in setup and used sound meters to set the volumes to match across all speakers. It is a you are there experience.. Earth shaking...

But back to the TV's active in both our opinions is far superior than passive and I am hoping the new formats to come continue to use the higher resolution. When 4K comes and some movies that are done in 4K and shown at that resolution it will be truly stunning.

FYI..if you want to watch a movie that was shot in 8K and mastered in the same and then done at 1080p I would HIGHLY recommend Samsara... It is reviewed on this site. Nothing short of pure eye candy. If your TV is calibrated it will make it shine and people will be amazed. No it is NOT in 3-D but it is beautiful on any fine high end TV that is well tuned. You will be surprised..

May you all enjoy the day and hope this helps a little.
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Old 04-15-2013, 12:25 PM   #12
RocShemp RocShemp is offline
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Quote:
Originally Posted by harlowek View Post
Even my girlfriend and his wife can tell.
Wait. Stop. Your girlfriend is married and she's also a guy. Wouldn't that make him your boyfriend and not really your boyfriend but someone that he uses to cheat on his wife?
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Old 04-15-2013, 12:34 PM   #13
Lnds500 Lnds500 is online now
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Quote:
Originally Posted by RocShemp View Post
Wait. Stop. Your girlfriend is married and she's also a guy. Wouldn't that make him your boyfriend and not really your boyfriend but someone that he uses to cheat on his wife?
Read it in context.
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Old 04-15-2013, 01:07 PM   #14
RocShemp RocShemp is offline
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Quote:
Originally Posted by Lnds500 View Post
Read it in context.
I know. I was just teasing.
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Old 04-17-2013, 01:42 PM   #15
steve1971 steve1971 is offline
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Quote:
Originally Posted by Villiam Hayes View Post
I think active is better,you are seeing full 1080p for a start which you don't get with passive.

Edit: if you google 'dynamic edge lit' vs 'edge lit' you should get some answers.
+1

I agree.
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Old 04-17-2013, 01:50 PM   #16
Captain Kirk Captain Kirk is offline
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I like active better. I always find the 3D more dramatic at home than at the theater when using active based technology.
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Old 04-18-2013, 01:35 AM   #17
AmrlKJaneway AmrlKJaneway is offline
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Quote:
Originally Posted by Serendipity View Post
I like active better. I always find the 3D more dramatic at home than at the theater when using active based technology.
I think a lot of people will agree with you.
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Old 04-18-2013, 11:22 AM   #18
Taygan315 Taygan315 is offline
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Quote:
Originally Posted by AmrlKJaneway View Post
I think a lot of people will agree with you.
Yep....I'm one of those people,lol.
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Old 04-18-2013, 02:58 PM   #19
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Default

Quote:
Originally Posted by keb33509 View Post
this crap again? It's not even going to matter when 4k is out. All panels will be passive.
Quote:
Originally Posted by lnds500 View Post
you still here? Still haven't improved much i see.

It matters to people who care about technology, if you plan on passively accepting what the industry dictates you to buy then this thread is clearly not for you.
lol
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Old 04-18-2013, 08:30 PM   #20
BozQ BozQ is offline
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I personally prefer passive. Only because I wear glasses, and wearing a battery operated active shutter glasses on top of my own glasses is a painful experience. Not only is it heavy, the strobing effect that comes with active shutter glasses always leaves me with a headache.

Even before the passive clip-on glasses became more mainstream, I found passive glasses to be a lot lighter. But the clip-ons is perhaps the best option for me to enjoy stereoscopic 3D in any manner. Hell, it's even better than auto-stereoscopic 3D.

EDIT: Although, to be honest, I'm starting to appreciate and enjoy 2D lately. The 3D novelty is starting to wear off on me. :P

Last edited by BozQ; 04-18-2013 at 08:32 PM.
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