I am currently trying to light a spitfire with a simple emitting sphere around it using the cycles render plus having a sun light set up. Before i placed the sphere I already had a sun light setup. After I placed the sphere i immediately got nice soft reflections on the spit from the environment but for some reason the sun is off now although i havent changed any settings or blocking the light with the sphere as it is inbetween the two.
Do you mean the Spitfire and camera is inside the sphere (and we see the gold_skyline mapped to the inside)?
If so, then the sphere IS blocking the sun - the ‘sun’ lamp object is just a guide to show the direction of the sun’s parallel rays from an infinite distance away.
Instead, delete the sphere and apply the background image to the world:
I actually found it out myself by turning off the shadow for the sphere as Rich33584 described as well. But thanks everyone! I think this will also help other beginners in Blender!