What is Grain

[TL OWNS U]

I hear that there are a lot of bluray movies with grain. What is grain and can someone show me an example of it?

[Chordata]

You might want to try a forum search. This has been discussed numerous times in numerous threads.

For example, the Ghostbusters thread in the Blu-ray Region A subforum has a lengthy debate on it.

[Chordata]

Also:

https://forum.blu-ray.com/showthread...ighlight=grain

https://forum.blu-ray.com/showthread...ighlight=grain

https://forum.blu-ray.com/showthread...ighlight=grain

https://forum.blu-ray.com/showthread...ighlight=grain

https://forum.blu-ray.com/showthread...ighlight=grain

https://forum.blu-ray.com/showthread...ighlight=grain

https://forum.blu-ray.com/showthread...ighlight=grain

Etc., etc., etc., etc.,....

[igotcabada]

Grain is the new black bars

[Suntory_Times]

Originally Posted by igotcabada

Grain is the new black bars

Grain is one hell of a sexy beast.

[jadedeath]

Grain = The thing that 'movie fans' complain about when it gets removed from movies.

Logan

[Beta Man]

Originally Posted by TL OWNS U

I hear that there are a lot of bluray movies with grain. What is grain and can someone show me an example of it?

Just an FYI also....

Grain is something in FILM.... not something that is found in "Blu-rays" but also DVD, VHS, etc.... the difference is, Blu-ray and HD DVD now have the ability to make the actual image so clear, that you can notice the grain, where you couldn't see it as well in DVDs........ So it's not "New"

It's caused by the silver nitrate chemical reaction used to develop the film.... it's in pictures taken with film cameras (still and video)

Hope this helps.

[Anthony P]

film is a plastic (cellulose) covered with photosensitive chemicals (originaly silver nitrate) and inks. The molecules that capture the information don't spread 100% evenly so where it clumps it will react more to light (brighter) and where there is fewer it will react less (darker). The thing you need to realize is that film is incredibly small compared to what you watch (many hundreds and possibly thousands of times bigger) so FG looks like darker/lighter spots where it should be completely uniform.

note: darker/lighter is relative. In B&W it is apparent, but colour film uses different colour photosensitive inks, so it could be "darker" in red while "lighter" in blue that will make it appear as a different colour and not necessarily darker or lighter

Note 2: this has been a film discussion so far and nothing to do with BD. The next stage for film is to scan it to make the digital image. The scanner will look at a real small area (size of pixel) and register its colour, if that area (size of a pixel of the scanned image) is darker or brighter due to FG it will end up being a darker or brighter pixel compared to its neighbour. With DVD and its much larger pixels most studios used DNR which helps get rid of all uneaveness, that removed FG which was a bigger problem due to pixel size and bandwidth of DVD but it also removed a lot of detail that could be there in the DVD. With BD most studios (and film lovers) think the ramifications of DNR to get rid of FG is not worth the cost of all the detail lost and the DNR artefacts that are created.

Note 3: what does FG look like? Well on film it will look a bit like shimmering light and dark since the difference will only be for one frame. If you want a good examp[le of heavy FG then Ghostbusters is a good example of what a lot of FG looks like.

[Infallible Presence]

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[P_B]

It has to do with how they used to produce film stock in the past. Sharper knives and cutting with the grain has led to a dramatic decrease in grain visibility over the years.