I made a animation with a Panoramic Lens (Fisheye Equidistant) but i need to render it with the OpenGL render for preview purposes.... But how can i activate that type of camera? or is it impossible? Thanks in regards.
Sadly this feature is not supported. Here is a snippet from the Wiki:
Cycles supports Equirectangular and Fisheye panoramic cameras. Note that these can't be displayed with OpenGL rendering in the viewport; they will only work for rendering.