Originally Posted by Footbaggin
Iatac's pics look much blacker than my set. Those pix look bezel black and my set is nowhere near that dark. Just something for everyone to keep in mind.
And that's for a reason. Guys, one should take the pictures of these "isolated" (I'll explain below) TV screens with a pinch of salt when it comes to gauging blacks. The way camera exposure (both digital and film) works, you cannot consider these blacks to be accurate representations. As anyone familiar with exposure will know that if you underexpose the picture a stop or two the image will get significantly darker. So you could take 5 pics of the same image being displayed on a TV at 5 diff exposures (each 1/3 or 1/2 stop down) and have the blacks look like 5 different levels of blackness depending on the exposure. The lighter parts would also respectively get darker along with the blacks but some of the 5 pics would still look "OK" to the point that they may not look obviously under exposed. Now what we have is an untrue representation where the blacks look much deeper than actual while the middle and brighter parts of the image still look OK.
In the quest to gauge how black
blacks are the only accurate way to get a representation in a photo is a "comparative" pic where 2 TVs are in the same photo while displaying the same image on screen (as opposed to the "isolated" pic where only 1 TV is in the pic). In that picture we would not be looking at the blacks in absolute values (of say a scale of 1-10, 1 being white and 10 being black) but rather looking at the blacks of one relative to the other. Since both TVs have been exposed at the same exposure it doesn't matter if the blacks are accurate, what matters now is how black
is one compared to the other. So if the absolute value of TV-A is 8 and that of TV-B is 9.5 then the "difference" of 1.5 is accurate. The absolute values (8 and 9.5) cannot be considered accurate since they are subjective to exposure conditions as described above. This "comparative" method is the only objective and true way to gauge blacks in photos.
I'll try to find a pic that showed this...will be easier to understand
EDIT - found the pic, now if you rated the blacks as say - pio 9/10, sony 6/10, and sharp 7/10, these absolute numbers or "scores" are not accurate since they depend on the exposure of that pic. By taking the pic at different exposures I could make the blacks on the pio look 9/10, 8/10 or even possibly 10/10 all while still making the mids and brighter parts not look too underexposed. But the comparative difference between the pio, sony and sharp would still be visible hence that "difference" is accurate.
source - http://gizmodo.com/gadgets/spec-wars...ses-259495.php