review of 3d passive 4k tv: Sony 65″ 4K Ultra HD 120Hz 3D LED Smart TV (XBR65X850B)


1. why 4k 3d passive? if you are really serious about 3d, and want to get 4k tvs, you have to get 4k passive for its 3d: it is simply the best.

PROS of passive 3d on 4k tv:

(passive 3d use polarized filters, instead of active shutters in active 3d)

  • with passive 3d polarized glasses, it will utilize all the pixels available on a 4k tv to display 1080p to each eye,  Before 4k TV 3d passive, the maximum resolution of 3d passive was limited to 540p (half the lines) on an 1080p tv (regular HD).
  • 3d passive is better, Unlike an active 3d glasses, there are no flickers, no ghost effect, no blur, no crosstalk.
  • 3d passive is the same technology as your imax movie theatres.
  • extended 3d viewing is more comfortable in passive 3d
  • images are clearer, more stable. Motion are more fluid
  •   Extra 3d passive glasses are cheaper than active 3d.
  •   With 4k active 3d, max resolution that you get is still only 1080p. Between passive or active 3d on all 4k tv, there is no difference of resolution. It will still only display maximum resolution of 1080p.

on 3d passive 4k tv you get the best of 3d in a 4k tv passive 3d :  full HD 1080p without all the downsides of active 3d.

downside with 3d passive 4k tv:

  • due to the polarized nature of 3d, vertical view angles in 3d are limited. If you are sitting or viewing the 4k 3d passive too high or too low, you will have problems viewing 3d properly.
  • you need to turn down ambient lights and reduce reflections from other lights sources to fully appreciate passive 3d.

click to know difference of passive 3d and active 3d, and why 4k passive 3d is better:

the pictures in 3d on a 4k tv are:

  • sharper
  • clearer, more brightness
  • more lifelike, look more like real 3d, as if you are there.

even the netflix hd and hd shows looks better on a 4k tv, as it is extrapolated and enhanced in 4k resolution. I tried normal HD netflix on an 1080p tv, compared to the sony 4k, it is like day and night.

Pictures of full frame sony a7 on a 4k tv: looks sharper, more contrast due to quadruple resolution of 4k tv. If you are shooting full frame pictures DSLR, you need to view it in 4k to appreciate it fully.

4k computer: you gain 4 times the real estate spae of a computer desktop. most nvidia graphics cards 700 series and up and easily display full 4k  desktop. I can easily view 3d mpo pictures on my 4k tv and computer. You do need a good high speed hdmi cable. ( bought the 25 feet red mere hdmi high speed cable at they are thin, small, unidirectional hdmi high speed cable, capable of rendereing and transferring my 4k signal though wall and display it on my 4k tv in another room)

specs of sony 65 4k tv:Sony 65″ 4K Ultra HD 120Hz 3D LED Smart TV (XBR65X850B)

4K Ultra HD resolution of 3840×2160 pixels
3D capable, and includes 3D glasses
Triluminous LED display
Featuring Motionflow XR 240 technology
Sound Booster audio enhancement
WiFi-enabled to let you enjoy instant streaming video
Built-in camera lets you Skype with friends and family

One-Flick remote makes it easy to find something to watch




Model Year 2014
Screen Size 64.5 in
Display Technology LED LCD
Backlight Type Triluminous LED
Backlight Configuration Edge-Lit
Backlight Local Dimming No
Resolution 4K Ultra HD
Native Resolution (Pixels) 3840 x 2160
4K Display Method Native
1080p Display Method Upscaled
Refresh Rate 120 Hz
Motion Enhancement Technology Motionflow XR 240
Dynamic Contrast Ratio 1000000:1
3:2 Pulldown Detection Yes
Colour Enhancement Triluminous Display
Viewing Angle 178ø
Picture-In-Picture No
Game Mode Yes
Sports Mode Yes
Cinema Mode Yes
Other Modes Photo; Animation; Music
3D Video Support Yes
3D Signal Transmitter Built-In Yes
3D Glasses Included Yes
Audio Enhancement Sound Booster
Auto Volume Correction Yes
Speakers Included
Speaker Configuration Bottom
Speaker Output Power 10 W + 10 W
HDMI Inputs 4 (Side)
Component Video Inputs 1 – Rear
S-Video Inputs No
A/V (Composite) Inputs 2 – Rear
Coaxial Cable Inputs No
IEEE 1394 (Firewire) Inputs No
Optical Digital Audio Outputs 1 – Rear
Stereo Audio Outputs 1 – Bottom
Headphone Jack 1 – Bottom
PC VGA Inputs No
PC Audio Inputs No
USB Media Port 3 – Side
Ethernet Port 1 – Rear
Wi-Fi Connectivity Yes
Bluetooth No
DLNA Certified Yes
Other Inputs/Outputs RS232
Media Card Slots None
Media Port Compatible Photo Types WMA; JPEG
Media Port Compatible Music Types MP3; WMA; WAV
Media Port Compatible Movie Types MPEG1; MPEG2PS; MPEG2TS; AVCHD; MP4Part1; MP4Part 2; AVI(XCID); WMV9; MKV
Smart TV Yes
Full Web Browsing Yes
Instant Content Youtube; Netflix; Skype; Sony Entertainment Network;
Remote Control Compatibility Dedicated
Touchscreen Remote Control Yes
QWERTY Remote Control No
Built-In Camera Yes
Closed Captioning Yes
Channel Labeling Yes
Last Channel Recall Yes
Language Options English; Spanish; French
Parental Control Yes
Built-In Program Guide No
Sleep/Alarm Timer Yes
Video Input Labeling Yes
Typical Consumption 285 W
Stand-By Consumption 0.3 W
Auto Off Yes
Energy Saving Mode Yes
Energy Star Qualified No
Physical Features
Cabinet Colour Black
Pedestal Stand Included
Wall Mount Optional
Wall Mount Specification 400 mm x 300 mm
Width with Stand 145.1 cm
Height with Stand 91.1 cm
Depth with Stand 28.6 cm
Width with Stand (Inches) 57.13 in
Height with Stand (Inches) 35.88 in
Depth with Stand (Inches) 11.25 in
Weight with Stand 33.3 kg
Width without Stand 145.1 cm
Height without Stand 86.7 cm
Depth without Stand 6.7 cm
Width without Stand (Inches) 57.13 in
Height without Stand (Inches) 34.13 in
Depth without Stand (Inches) 2.63 in
Weight without Stand 32.7 kg
Warranty Labour 1 Year(s)
Warranty Parts 1 Year(s)

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