Sphere renders look imperfect in Blender 2.79 I'm just trying out a very basic render whilst getting to grips with Blender

I've created a sphere and exported as a PNG, but the sphere looks quite wobbly and imperfect. I just exported it using the default HDTV settings.

See the attached image, I've drawn a perfect circle around it in Photoshop so you can see how off it is:



But when I view the sphere in 3D View in Blender it looks fine.

Any anyone see what the problem is?
You should use a "subdivision surface" modifier to add more geometry.
Check that the level of subdivision surface is the same between "viewport and render".