I have been following a tutorial on YouTube of how to make a bulb in Blender and it has all gone good so far until I did a quick render to see how it looked.
In the 3D solid view and 3D rendered view the glass of the bulb is smooth (subsurf bumped up to 4 in view and render to try) and smooth shading is on but in the final render the glass of the bulb shows angled edges even though the subsurface is set as 4 for the render.
Could anyone tell me what the problem could be and a possible solution?