Originally Posted by eagle_2
I see. Except - this still doesn't make any sense to me why the whole screen needs to dim when you only want the letterbox bars to dim. This completely goes against the entire concept of the Cinema Black feature in the first place - to dim the black bars only, not the whole screen. What's the point then?
And what about this promise:"Produces a much greater increase in contrast and black levels by dimming LEDs behind dark areas of the picture thus making blacks darker without affecting brighter elements of the picture."
If this is true, then why does the whole screen need to dim just to dim the black bars? This just doesn't add up to me. I still haven't heard any explanation as to why the whole screen needs to dim after they make a promise like the one above.
In theory (or at least the way Samsung says it works), cinema black should do what you posted above. In reality, perhaps it's just not possible to do exactly the way Samsung describes it.
The way I look at it in an entirely unscientific and most likely incorrect way to view it
...... if you have a room with four lights on and turn off two of those lights, the room will not be as bright. You would need the light output from the remaining two lights to output more light to compensate for the loss of the other two lights.
Obviously, the cinema black feature would need to compensate for the loss of light output to maintain brightness/contrast while lessening flashlighting from the top and bottom. Perhaps this explains why sometimes....
- occasionally the image dims overall because something with the cinema black programming/software, etc... fails to compensate correctly for the lost light output, thus resulting in a slight loss of brightness and contrast?
- occasionally the image on the left and right has edge bleed as perhaps it then over compensates?
Perhaps, this is why Samsung chose to disable the feature in the ES series despite it being in the D series because they could never get it to truly work correctly all the time? Then as a result of all of the complaints and returns/exchanges due to excessive flashlighting and clouding, they decide to put it back in the F series, but allow the user to control it so it can be turned off if the user does not like the occasional issues that may result from the top and bottom zones dimming.
Again, obviously I have no clue how it really works since I'm sure only the Samsung engineers who programmed/designed the feature know exactly..... but just looking at it from the simplest possible explanation sometimes makes the most sense to me at least.