I have made a scene and i have been rendering it many times which have been working fine but suddenly a day when i opened my project again the render dindt really work. All i got was a simple solid grey picture like this:
couple of silly things you can check. Obviously make sure there isn’t anything obstructing the cameras view. Check to see if you have accidentally changed layers. Your scene looks good btw
Could be your camera clipping plane is not set far enough out. Select your camera and go to it’s Object Data and look under “Clipping”. Set the End way up to like 10000 or something and render.
I ahd the similar problem and posted a new thread.
The solution was simple and unexpected:
In the Outliner window the models restrict renderability icons (camera icon) were off.
Unconsciously I used keybord shortcuts (still don’t know wchich …)
All i saw was the background color -gray by default.
Thanks for the answers but it still doesnt work. I dont think it has anything to do with the camera or lights because i tried to create new ones and it still was the same. Another strangething is that my second layer rendered perfectly even though it only inlcuded som shadeless lights.
Took a look and in that file you have 2 render layers (in the render panel) - the 1st layer called ‘Scene’ and the 2nd one called ‘Lights’. Under the first render layer ‘Scene’ you have the ‘Z-mask’ enabled, disabling it cures the problem. Not really sure what it does, and the manual isn’t very helpful - http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Post_Process/Layers#Include_Options
Disable it and your scene will render. In the render panel, you also have under ‘post processing’, ‘compositing’ activated, but you only have one render layer in the node editor, the ‘Lights’ layer. So after rendering both layers, only the lights layer is processed in the compositor and your final output is only that render layer.