Chaos Corona for Cinema 4D > [C4D] General Discussion

camera move

(1/1)

celmar:
I have two questions:
1- the background picture is on a background, and there is a shasow catcher shot under the frog's feet... is there a way, by doing a tracking shot, to also have a progression on the background picture? if I put it on a shot, I can have the progression, but it's the shadow catcher that doesn't match anymore...thanks for your solutions!!!!
2- as soon as I place a sky corona, the shadow catcher stops showing the drop shadow... well, I can reconstitute a roughly equivalent light with areas, but it's less “elegant”...???

BigAl3D:
I'm not 100% sure I understand your problem, but I think you want the background image to react to the camera movement? If so, maybe try adding a flat plane with the same proportions as the background image. I usually make it a child of the camera and zero out the positions and rotations. Drag it out of the Camera and position it to fill up your screen and add that background image. Now when you move the camera closer, you will also get closer to the image.

Things to keep in mind. Your camera move can't be too dramatic since it's a flat image. Subtle is better here. You may need to move your image farther away from the camera to help control that. You will also have to scale it back up to fill the screen.

I'd probably add a Corona Compositing tag to make sure the background image doesn't block light and cast a shadow.

If you want to learn something really useful, not sure your level of C4D knowledge, learn about Camera Mapping. If you aren't familiar, it's the technique that is used when you only have a flat image or can afford to build a 3D version of the scene, so now you can make small 3D moves and the scene appears 3D. In your case, using simple objects like planes, cylinders and cubes, line them up with your image. I can't remember if you need to cut out the different shapes in Photoshop too. Using the Calibrate Camera, and Projection tag, it can magically transform your background into a 3D scene. Again, works best with smaller camera moves. I found this OLD C4D tutorial that seems pretty clear showing the process.

celmar:
thank you, Bigai3d!... indeed, tracking makes it possible to obtain a result... but it's a bit complex to implement; and setting the pontoon's scratches perfectly, in the example, is laborious anyway... but I'm not familiar with tracking, I'm going to dive into it more seriously!

BigAl3D:
I didn't see a pontoon in your images so not familiar with that. The video I posted is not for tracking. The Camera Calibrator is just to match the C4D camera to the image to match perspective/focal length. This way, when you add the simple shapes for the camera to map the image onto, it will match everything. Yes, the Calibrator is also used in Camera Matching, but since your background is a still image, that would be unnecessary.

Everything I have posted is base on the background image being a still image. Is that the case?

Navigation

[0] Message Index