A Question About Grain The Blu-ray Movies?

[Anthony P]

Like Knight-Errant pointed out cars and chicken little where not created on film and so they should not have film grain. Many are not used to seeing FG on their TV. But FG is part of the normal process of film and so when it is not there, it is a sign of a bad copy and not the other way around. There is no way to have film without FG (obviously more expensive film would have finer grain then cheaper one) , and so when digitized with enough resolution it will appear in the film. You can filter (blur/soften) or over compress and then you will see the FG less, but you will also see less of the other details (the reason for going HD in the first place).

As for not seeing it in special effects, it would depend on other factors. if it is CGI and the digital master was created from the PC output that merged the film with the CGI then the special effect would not have the grain like the rest that came from film.

[Knight-Errant]

Originally Posted by Anthony P

Like Knight-Errant pointed out cars and chicken little where not created on film and so they should not have film grain. Many are not used to seeing FG on their TV. But FG is part of the normal process of film and so when it is not there, it is a sign of a bad copy and not the other way around. There is no way to have film without FG (obviously more expensive film would have finer grain then cheaper one) , and so when digitized with enough resolution it will appear in the film. You can filter (blur/soften) or over compress and then you will see the FG less, but you will also see less of the other details (the reason for going HD in the first place).

As for not seeing it in special effects, it would depend on other factors. if it is CGI and the digital master was created from the PC output that merged the film with the CGI then the special effect would not have the grain like the rest that came from film.

They usually add it to effects shots for just this reason. The effects should blend with the surrounding film.

On old photo-chemical effects shots the grain would be much worse than the other shots. This was due to the film passing through an optical printer for several passes, layering up the effects (like cell animation).
This is also why shots with dissolves and fades tend to get grainier and lower quality in old films so that you can tell when a transition is about to occur.

[joshfuld]

i know all about film grain, but the grain i am seeing is much more pronounced. like i look at At World's End, the scene where the ship looks like it is in space and the amount of grain is tremendous. any thoughts?

josh

[ryoohki]

Originally Posted by joshfuld

i know all about film grain, but the grain i am seeing is much more pronounced. like i look at At World's End, the scene where the ship looks like it is in space and the amount of grain is tremendous. any thoughts?

josh

Well film is sensitive to light. if you film in Low light, you have to get the ISO lower. lower ISO to get more light from darkness but also have more grain because theirs more gain.

It's the same principle used by Photography. If you have to shoot in the dark, you have to boost the ISO cause more grain in film medimum and more noise in digital realm

Digital Camera have the same issue, but instead of grain, it's noise. But since gain can be adjusted on the fly this usually give you a uneven film.

Studio rarely mix Film Print, but some do. All POTC movie have been shot with darkness in mind.

The only movie that don't have grain are 100% CGI movie or 100% CGI / BluScreen Pasted Sfx...