LG 3D passive screen or other (1 Viewer)

[andre1969]

Hi All

I have a 54 inch LG passive 3D television. I do not have a idea on how the 3D is passively displayed rather than using shutter glasses but I have been wondering if I am not missing out by not having a 3D TV with shutter glasses instead. Anybody on the forum with any knowledge on active and passive screens and how they differs comments would be greatly appreciated

Andre

 

[Interdimensional]

In my view passive is better. The glasses are the same as Real D glasses you get in the cinema with polarized lenses, so they're much cheaper to replace, and you don't have to worry about replacing batteries or charging.

Passive TVs display the 2 seperate images for the left and right eyes on alternating horizontal lines. As such, on a 1080p tv, you will lose half the vertical resolution. Instead of watching a 2d image 1920 x 1080 pixels, you are watching 2 images, each 1920 x 540 pixels.

This was the main advantage to shutter glasses, they could display both images in full 1920 x 1080. Active tvs work by flashing left and right images on alternate frames, so that can create other issues, such as flicker. I had bad memories of the early days of heavy uncomfortable shutter glasses, so I never wanted to go down that route.

However now that 4k tvs are available, you can have full HD 3D images on a passive 4k 3d set.

Congrats on you new 3dtv. If you're new to 3D, be sure to check out the top 30 must own 3D thread.