Does the Hz on a TV actually make any difference? How many should I get (60, 120, 240)?
byGeekSquad09-23-201010:46 AM - edited 11-01-201007:31 AM
Hertz measurement on a TV comes down to it’s frames per second. This usually matters on LCD/LED formats as plasmas use 600Hz subfields to display a moving image. The reason why 120Hz is sold as an advantage to customers is because it uses the TV’s processor to double up an image frame rate creating a smoother transfer between frames. This prevents image motion blur (scrolling images).
One big functional advantage to having 120Hz frame rate is that it is the lowest common denominator between film’s 24fps and NTSC’s 30fps. This creates a very smooth film recreation that is similar to what the director intended (as long as that feature is activated on the bluray player) without it looking awkward.
240Hz is an effect feature that again doubles the frame rate attempting to enhance motion even further. Personally, I cannot see the enhancement beyond 120Hz. The advantage I see to purchasing a TV that has this feature is that the TV requires quite a bit more processing power to accommodate this feature. If you turn off this feature, the TV is capable of diverting it’s processing power towards motion itself allowing the TV to create a moving image without dropping in resolution* (this usually looks better than a 120Hz image).
*An overloaded TV processor will drop the resolution of the moving image in order to keep the speed and fluidity.