Originally Posted by Ruined
Grain does not make a movie "look bad." Film, which most movies are shot on, inherently has grain. It is naturally there. If you use DNR to remove the grain, you remove the fine detail as well because the fine detail is actually stored in those film grains. So you have the choice of either watching with grain and getting the full detail as seen in the theaters, or you can DNR out the grain and get effective lower resolution and a video-like look.
Personally, I far prefer grain & theatrical-like look than trying to DNR everything (losing fine detail in the process) to look like a video game/wax museum. Film grain is to Blu-ray what "black bars"/widescreen was to DVD; it takes some adjusting to, but in the end you are getting higher quality with the grain intact. There is little point to high resolution/Blu-ray if you filter out tons of fine detail.
That depends on whether the grain was artificial or inherent to the film media it is shot on.
Some spec effects films, CGI, IMAX shot, 1080p+ video shot, and animated CGI movies now have added film-grain purely for effect.
If it is intentional and natural to the film, like in Reservoir Dogs and it is inherent to the film, then that is fine; If it's added for "credibility" or appearance with Magic Bullet software . . .etc. and only for effect then it's crap and shouldn't be in the Blu version IMHO.
To me it's like people who prefer the audio of a Vinyl LP over a CD because they like the pop and crackle-calling CD's artificially bright. It's a thin argument.