I am having trouble with rendering this simple camera mapping work. I created several planes and UV mapped all the images.
As you can see from the following screenshot, there is always a black object partially block the view when I render it. If I create a new world and change the world color to gray and then this black will change to gray as well. However, it shows up whenever there is world or not.
I also notice that the black object will disappear if the camera moves forward towards the image somewhat.
Could you please tell me what causes this black stuff and how to fix it? Many thanks in advance