3d for film

[Jayk2k]

It depends on what the comp package is going to be working in. Most of the time it is 2k. But some facilites will do a hard crop of 1:85 or 1:66 to reduce file size and reposition the frame during film out.

Next important is color depth. Most places these days will be doing at least 16 bit per channel, if not float when it comes to film. Make sure you find out what the compositers require, and render out the appropriate depth and file format.

Best bet is to talk to whomever is doing the compositing to see what they require.

[storaro]

so it seems to be 2k format, but how can i decide if it going to be
1:85 or 1:66(as acompositor)
wher can i find some more info fo this issu?
tnx in advance:beer:

[Amyd]

Ummm, you ask the director of photography & director how they want their film to look. :eek:

Seriously now, the choice between 1.66:1 and 1.85:1 is very simple. 1.66:1 is used only when you want to have a bit of reserve in your shots, so that the director could decide to re-frame it a bit lower or higher and because it always pays to have a bit of space around the 1.85:1 frame in case the projection isn't masked perfectly.

The real question is in fact whether it is 1.85 or 2.35:1, these are the two most common aspect ratios for the finished product. The first one is the one used in so-called "flat" films, and the second is for anamorphic films. Whether it's one or the other is a choice that you need to make right at the beginning of making a film - it affects the whole look.

2.35:1 uses a different "sort" of 2k resolution, in that the actual pixels are in a 4:3 frame, but they get "unstreched" to the real aspect ratio on the horizontal direction (they have what is called a different "pixel aspect ratio"). Because of that, working with 2.35 anamorphic shots is more "expensive" in terms of rendering and storage than with flat 1.85 frames (which are smaller, even when they have the reserve space at 1.66:1).

Complicated, eh?

Cheers,
Andrei

[storaro]

thnx amyd:thumbsup:
things are mach mor clear now.
the other q is :in what point in the meking process do i mack the
dvd(and can it be in 3:4 format?)
Complicated-yes indid!
but no othet choice:beer:

[storaro]

my english is so baaaad i apologise

[Amyd]

The DVD will probably get made after you release the product in cinemas. And there is no need to make it 4:3, as most people have learned to watch 1.85:1 or 2.35:1 films on their regular TVs with black bars on top and bottom. It's really no problem.

The other way would be to "zoom-in" into your film-resolution frames and do what is commonly known as pan-and-scan transfer, to get a 4:3 frame. But it's really a horrible way to destroy a film, by cutting most of the frame and thereby changing the look&feel (hehe) of the product...

Cheers,
Andrei

[beaker]

http://www.cinesite.com/CineonTech/resoultions/ResChart.html

[CGTalk Moderation]

This thread has been automatically closed as it remained inactive for 12 months. If you wish to continue the discussion, please create a new thread in the appropriate forum.