Quote:
Originally Posted by Godbluffer
Indeed it isn't a good thing to over-estimate the predictive qualities of screenshots, but neither is it a good thing to under-estimate it, and it's even worse when a large part of the motivation for the latter seems to be plain and simple hatred of the AVS-forum and therefore any dismissal of tools that are over-used there. That makes it clear that for some over here there's just as little middle-ground as for some over on the AVS forum.
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The use of screenshots has been proven time and again to be fraught with pitfalls for the critical evaluation of Blu-ray picture quality, despite your choosing to ignore that fact. These pitfalls have been extensively described by myself, Deci (a multi-year attendee of this Symposium -http://www.amianet.org/events/thereelthing/program09.html - as a profession working in the field) -,as well as
AVS membership, such as Josh Zyber-- in regards to dnr (see quotation)…..
“"A movie image is comprised of grain. That grain pattern changes in every single frame, 24 times a second. Persistence of vision contributes greatly to our perception of detail in the image. When you extract a screen cap, you're only capturing the detail and grain present on that particular frame at that particular moment in time. A single screen cap
does not capture all of the detail and grain visible to the eye during regular playback.
Screen caps are useful for certain things, like aspect ratio framing and color. But they're simply not a reliable indicator of how much detail a moving image will exhibit, or whether DNR was used. There are far too many photographic attributes that are easily mistaken for DNR in a screen cap, like soft focus, soft lighting, and certain lens choices used in the filming.” END
Additionally, I recently made this post on my thread to provide an example for its misleading detection of what people on AVS considered at the time to be the egregious presence of sharpening artifacts (EE)with Baraka.
https://forum.blu-ray.com/showthread...ng#post2238485
One of the most prolific *screenshot scientists* now actively posting on AVS
was banned from this forum a long time ago for having had manipulated his screenshot comparison, unbeknownst to the casual reader/observer.
Many members here are completely in the right to dismiss the use of screenshots for all of the reasons above (and more, such as comparing I and B frames, rather than comparing I to I and B to B).
Please don’t try to use Gladiator as proof to the validity of the use of screenshots for discerning critical picture quality. You will receive no sympathy from me, nor many other astute members of this forum. It is
not a standard in use at any major studio or post house to evaluate the picture quality of a Blu-ray movie, and for good reason.
I’ve already received several P.M.’s complaining that you’re carrying this anti-Braveheart campaign to other forums besides Blu-ray.com which strikes me
as an agenda, rather than stating your observation and moving on. Also, if you think you can strong-arm Paramount into recalling Braveheart or reissuing a more visually pleasing disc at least to your eyes, or have them implement a change in their technological or business practices, I’ll tell you right now that
it won’t work and you’re becoming a nuisance by trying so here. If you think you can
shame people here that are fans of the movie into not purchasing it because it doesn’t meet your standards……..that is nothing to be proud of either.