odd layer behaviour in 3d comp

	odd layer behaviour in 3d comp by adam taylor on Nov 8, 2008 at 11:00:01 pm I'm having a strange effect happen when rendering a 3d comp in CS4. I have a logo that was created in Photoshop and sent to me as many layers full of style effect . I merged layers to get this down to 4 discrete layers with the effects baked in. I imported it into AE and animated a reveal using lighting effects, then i imported that project into a third project that has a 3d environment created entirely with AE. The problem occurs several seconds into the render, after the reveal has happened I move the camera up and around the logo until its out of frame. As the camera begins it moved, the layers of the logo change how they appear. To describe it would help to explain the layers - bottom layer=fabric texture, layer 2=union flag, layer 3=Shiny 3d text, top layer= gold braid edging. Its designed to look like a sew-on military patch. What happens when the camera move begins is the fabric texture suddenly appears to blend with the gold text layer, whereas prior to the move it was behind the text. I have checked that the layers are not shifting, in any of the comps or imported projects. There is no change to blending modes. I have even tried shifting the z-depth of the badges layers to try prevent the problem but nothing seems to work. If anyone could suggest what might be happening i would be really grateful!! I'm running AE CS4 on a 8core Macpro with 10gb ram, os 10.5.5 and an nvidia 8800 graphics card. thanks adam Adam Taylor Video Editor/Audio Mixer/ Compositor/Motion GFX/Barista Character Options Ltd Oldham, UK www.sculptedbliss.co.uk Respond to this post   •   Return to posts index

	Re: odd layer behaviour in 3d comp by Dave LaRonde on Nov 10, 2008 at 8:25:58 pm I bet this logo appears in your comp as four 3D layers. When you use AE's Blending Modes, they affect whatever is below them in terms of what the camera sees. As you have things set up currently, the camera moves, and the camera sees different spatial relationships between the logo layers than you intended. So you may have to move the logo into a precomp, then bring it into the main comp to accomplish what you want. Dave LaRonde Sr. Promotion Producer KCRG-TV (ABC) Cedar Rapids, IA Respond to this post   •   Return to posts index

	Re: odd layer behaviour in 3d comp by adam taylor on Nov 11, 2008 at 9:22:35 am sorry Dave - its already in a pre-comp. Thats why i'm baffled by the result....its also why i tried putting small amounts of z-depth on the layers to try maintain that spatial distance. thanks for the suggestion though. adam Adam Taylor Video Editor/Audio Mixer/ Compositor/Motion GFX/Barista Character Options Ltd Oldham, UK www.sculptedbliss.co.uk Respond to this post   •   Return to posts index

	Re: odd layer behaviour in 3d comp by Dave LaRonde on Nov 11, 2008 at 4:49:34 pm Well, if you put the z-space into the precomp... and turned on the precomp's Continuously Rasterize switch... you've created a 3D object. How about a prerender instead of a precomp? Dave LaRonde Sr. Promotion Producer KCRG-TV (ABC) Cedar Rapids, IA Respond to this post   •   Return to posts index

	Re: odd layer behaviour in 3d comp by adam taylor on Nov 11, 2008 at 4:56:10 pm yes i know, but that doesn't explain why the layer at the back suddenly becomes imprinted as a texture onto the top layer once the camera begins to move. I will be resorting to the pre-render option. I just wanted to get to the bottom of this problem so i cant try avoid it in future. regards Adam Adam Taylor Video Editor/Audio Mixer/ Compositor/Motion GFX/Barista Character Options Ltd Oldham, UK www.sculptedbliss.co.uk Respond to this post   •   Return to posts index