I have watched BlenderGuru's camera tracking tutorial and tried to do the same with cycles but i want to remove the base plane which is used for shadows while keep the shadows intact. How can I do it?
82039
I'm trying to make a logo that will be on the header of a website. What I'd like to achieve, and the reason I'm using Blender, is the projected shadows on the background looking perfectly real (as opposed to doing a drop-shadow in Photoshop).  The only thing is, the background has to be transparent because the website might use different background colors / gradients that make it impossible to match with the exported 3D background.  I made this dummy file (not the real logo... duh!):    If I use the file as is, the grey borders of the image will be impossible to match with the website's background color.  Here what I want:    So obviously, I tried masking the plane, which made the shadows disappear. I tried having a plane set to glass, which didn't work either.  And I looked around for a similar question, but didn't find one.   I am not trying to render , or a . I've seen  which has a very difficult solution to this problem, and  that is very similar but in Blender Internal.  is similar too but has never been solved. I'm only a beginner at Compositor, and I'm trying to learn more any chance I get, so any solution in Compositor is welcome if detailed enough. Although if there's a simpler or faster way, it's welcome too!  .blend file:
83899
I am trying to create something like this in Blender, but I don't know how exactly.  I captured a model of a WWI bunker with photogrammetry and processed it with Agisoft Metashape but I like to add an “earth base” for a nicer presentation. I imported the OBJ file into Blender but I'm having trouble making it work (I'm kind of new to Blender). Extruding the model downwards gave bad results, so I tried duplicating the model, making it flat, selecting the edges of both the model and the base with Edge Loops and then Bridging the Edge loops but that gave really funky results (I think not all edges were correctly selected, resulting in an uneven amount of edges between top and bottom).  Could anyone propose a workflow to achieve this in Blender?
10459
Newbie to blender here. I'm trying to take a curve or traced object and essentially make it wider all the way around. I'd also like to do the same, later but make the same object thinner all around. I'm trying to make a cookie cutter for my daughter and I want to make the object below porportionally wider, then drop a copy of it (only thinner) on top and join the objects together, this will be the "stamp" or cutting edge. Am I thinking about this correctly?      I'd like to make the copy of this object much thinner and drop it on the top.  Thanks in advance!!!  which vertex are you referring to?
6936
How do I remove them?    They don't appear when using flat shading.    Nothing in the scene can cause this.
35929
i have a 3D Object and want to add a background image( if possible even a movie) to this 3D Object. I use Cycles to render and tried a plane with the  image as texture. When i go into render mode, it looks like this(picture with background) and when rendered, it has no background. The key also looks into  a different direction.  Should i even use Cycles for this or use motion tracking? i tried to use that but had several problems.     Rendered mode   When scene is rendered
40251
I have added a background image to the world settings. However, it has disappeared from my 3D view and only shows when I view the scene from the camera. Does anyone know if there is something I can do to make it reappear?
25507
I want to make certain shadows more prominent (using Cycles) without further illuminating the rest of the scene.  Example: I have a simple studio with a bowl of fruit and 3-point lighting.  The light looks great so I don't want to change it but I want the bowl to cast a darker shadow on the ground (without dimming the back-light).  Alternatively, and this would be really cool, an anti-light source.  Like a spot light that throws darkness instead of light. (Am I crazy for wanting this?)  Thanks!
119690
I have a tunnel that I want a camera to go through, and want to replace the armature with a curve so it moves exactly on that path. I'd like the camera to also rotate to follow the bends of the tunnel. Using cycles.   Appreciate it, the problem I'm having now is that the camera follows the path, but after each turn, kind of snaps back or bumps, like a recoil of sorts. I reduced the size of the turns, but it still happens. And within the graph editor I can't change the interpolation mode, it's all greyed out. The only reason it looks kind of decent is because the camera is set to 15mm. Any ideas?
77378
I have a simple scene where I have simple planes and textures using the alpha channel of the PNG as transparency.    The way I created the files makes the Alpha channel 000 black and 255 pure white. Here is one texture if you want to examine it.      When I prepare a scene using cycles, it works fine.    I can add more planes this way.    But when I add a third one, the intersection of the planes begin to form a shadow.    Stacking 4 planes make the shadow obvious. It is rendered on the spot where the images are combined.    Here is .  What settings can I change? I changed bounce samples... but this is not about bouncing...  Any tips?
11170
Often I want to just point the camera to an object or a specific area in my scene to get an idea of how it'll look in the render. What's the most painless hassle-free way to do this in blender?  A quick search on the blender wiki does not lend itself to easy look-up due to all the noise in the search result.  This question could probably be broken down into these two main questions:   How do I point a selected camera to the current 3d-cursor location in the scene? How do I point the selected camera to the currently selected object(s) in the scene?
37081
I already solve my camera and created 3d scene successfully. Now i want to do 2d track the original clip and by using solving data, i want to extract that specific point into 3d coordinate (as empty object or plain axes). How can i do this ?  Thanks
35631
Trying to follow along with a tutorial and in that tutorial the idea is to look at an object I created from the front and then set the camera to the current view.  The steps to do this are:   Numpad 1 (Front perspective) Ctrl+Alt+Numpad 0 (Align Camera to View)   For some reason whenever I do this I don't see anything in the camera and then panning the view around I see that my object seems to have moved to where I wanted the camera and my camera hasn't moved at all.
63170
Here's what I need to do.  I have a footage of a street. I want to add several people walking. Each person was shot using chroma.  I understand how to remove the green using nodes. I understand how to composite each element using nodes. What I don't understand is how to I manipulate them in 3D space in order to move them where I want each element to be or animate them.  I could use the video as texture on a plane and move the plane around. But I want to know if I can process that video as texture using masks and keying. Or should I key every person, render them, then add them as texture to the planes and work like that?   Thank you
101846
How do you make the camera in blender cycles render everything so it looks like pixels? I want everything in my scene to look pixelly like this image I found:
33089
I am starting to learn using blender, and at some point I managed to do something to the 3D view camera.  Usually the camera orbits around an object, but now the rotation seems to happen (atleast very close to) around the "camera's origin". Neither the input setting in "User Preferences", the pivot point selection nor Ctrl-Alt-Shift-C (as suggested on some forum) do anything to the issue.
64556
I would like to have my object transparent, with a color only on the edges, would someone know how to do this? I am starting with the nodes, if anyone can help with some guidelines I would really appreciate ;-)  EDIT:  I was looking for something like the hand in Kinectimals :    Thanks
40467
Ok so In blender, I'm making a city, but in the 3d view, it disappears when going to a certain distance:  I'm not using a camera or anything, this is user perspective Help?