Another nice thing is that if just a portion of your image is wrong you can render just that part and combine it with original image by deselecting black areas. You can even render several different images where this "mask" is in different positions and combine those images together in imagemanipulation program. Rendering is fast on black areas so you can test render specified areas of huge images quite fast. Image is totally black except from area which hole "covers" and part of your scene is shown there. That's it! Hit "Render to Picture viewer". With point-mode scale only the inner hole if needed. Scale and move it to reveal only a part of your scene you just want to render. Rotate it so that it faces towards scene-objects and move it a bit nearer to a objects but make sure that the outer sides of "mask" covers whole viewport area.
![terragen camera not matching maya terragen camera not matching maya](https://d2tmthzm7jp200.cloudfront.net/tutorials/sixteen_by_nine_images/000/000/547/thumb/PAV01_cover.jpg)
To be really sure it's not affecting or get affected by lights create new material and activate only a luminance channel and change it to a pure black.īring it very near of camera-object (I used Transfer-function from Functions-menu). Give it a render tag and disable everything but "Seen by camera". Hit delete from keyboard to delete this new polygon, so you end up with a rectangle which has a hole in it in the middle. Use "structure-extrude inner -function" and scale so this new polygon is at least 50% smaller than original. Go to select polygons -mode and select this polygon. For example create Plane -object, change rubdivisions to 1 in x and y dimensons and convert it to a polygon object (hit C on keyboard). Instead of rendering whole image just to check if everything is ok would be too time consuming, since every render took about 2 hours, so I ended up making this little mask which helped. For viewport usage there is this handy tool "Render Region" which is nice but with it I can only render low resolution version and to a modeling viewport only, not to a renderview or to a file. While I was rendering quite huge image (3636 x 2657) for Master & Servant challenge I found out that I wanted to render just a portion of image to verify if polycount is smooth enough in particular areas.
![terragen camera not matching maya terragen camera not matching maya](https://blog.corona-renderer.com/wp-content/uploads/2019/01/Shadowcatcher-for-Corona-C4D-Blog-Post-2s.gif)
Jorge Luis Borges,Un Poeta Menor,Oro De LosĪttached Link: all! This may be an old thing, but have to say I haven't seen it mentioned before. (unaware, of course that the multi-layer image was being rendered, but I wasn't seeing it. What I would see is that nothing was rendering. Depending on the existance of objects in the foreground and the DOF settings, sometimes the depth map would be 100% black. I used to check my depth map while rendering, out of curiousity, and then deciding what I was working on was 100% trash, I'd simply delete most of the stuff I'd been working on, set up a different scene, using the same file as a template, forgetting entirely that the picture viewer was still set to display the depth map. Here goes: If you've been doing any multi-pass renderings, i.e., like me, creating a matching, along with the normal color image, a depth map for later use in DOFpro, be sure you've returned the "channels" settings on the picture viewer set to "multi-layer display" and "red" "green" and "blue" checked on the "components" settings. started paying some attention to what I was doing. I'm not sure if this will help any, but it's a simple problem I occasionally ran into when I first began to use Cinema 4D, years ago.