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iest_rob 1,671 posts
Hello, i came across a video this afternoon by Framestore CFC, and it showed how these guys achieved some stuff, without going into any detail at all, they just did that wipe thing across the frame u konw? And on the video is showed this three different cips of the same shot, but with the CG model graded so it looks like it's blending with the live action background. Could anyone please help me out as to how they achieved this? Is it colour correction and grain or something similar? Any tutorial on the subject would be excellent.
Thanks
Iest
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Franklyn 553 posts
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ivanisavich 4,196 posts
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iest_rob 1,671 posts
Hi guys, thank a lot for replying. I got the video off an old 3D World mag, which was pretty cool. Has anyone got any tutorials as to how to go about doing this? Like how much grain to add etc? I beleive i asked you this beore Tyson for your 'The Beast Within ' short, but you did it all in Max didnt you? I've also heard that you can film a white card and then use the film grain you get from that to ovverlay the CG, how would you do this? Use a screen mode in the layer properties or something simliar? I just want a good tutorial u know?
Thanks a lot guys
Iest
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ivanisavich 4,196 posts
Well when it comes to adding grain....it's basically just a "does it look good" kinda thing. There's not too much science to it, other than using your eyes to make sure it looks right (certainly there are some methods that can be used to "match it up" better than others....but there's no "add good looking grain" function or anything that I'm aware of
)
THAT being said, most post apps do have a grain filter you can add....so filming a white card is completely overkill
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iest_rob 1,671 posts
Hi Tyson, excellent, i think im getting a clearer picture now, thanks a lot. It's funny because all the top companies make it look as easy as clicking a button, this is where im getting confused you see, thanks for the advice. I see what you mean with the white card, but i suppose it'll blend in more wont it? I'd like to try this me thinks, could anyone tell me how to go about doing it? So i can just prove myself wrong.
Thanks
Iest
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ivanisavich 4,196 posts
A white card would be fairly simple...although you'd still be going out of your way for now reason
Basically just find an evenly-lit white wall, or piece of paper and film it. Naturally your camera will add grain to the footage. Import that footage into your post program of choice (preferably afterfx) and place it overtop of your footage. Then set the blending mode of the white card footage to darken, or multiply or linear burn or anything that will cause the darker (noisy) pixels of the white card to darken the underlying footage (without the white pixels affecting it).
Like I said though....any post-app's noise filter will do exactly the same thing (only you'll have even more control)...so there's really no reason to do the white card setup unless you're really hardcore
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Franklyn 553 posts
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ant- 73 posts
shotting a plain wall is on the wrong tangent completly, each ccd, or film stock has its own unique grain responce, you get different types of colour, size intensity of grain over different shades and colours in the image. most compositing programs have some kind of film grain button, shake has a good one, but the furnace plug-in suite goes one further by haveing a degrain and a regrain node,you can select an area of a grainy image, analyse it and then remove it from a plate, then once your comp is put in you can regrain the image with the same grain, and as the entire image is done, the cg always beds in nicely.
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iest_rob 1,671 posts
Waw thanks a lot for your help, this is excellent. this furnace plug-in suite sounds good, is it just for Shake?
Thanks for the info on the white card Tyson, i'll give it a try, just to see you know?
Yeah i agree Franklyn lol, slowly getting there though *i hope*
Again, thanks
Iest
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iest_rob 1,671 posts
Ant: Could you tell me which one of the furnace plug-in suite does the process you described? I've looked on the website, and it deos'nt give me much detail about which one does what. I can downloads demos, so i'm looking forward to trying it out. Do you have a direct link or anything?
Many thanks
Iest
