Background composite picture doesn't fill render

[xDanny]

Hi, The sky background doesn’t fill out the whole render image. Any idea what went wrong?

[FedPete]

If the background sky is a plain image, you could scale it!

or

make the island smaller and move the camera closer.

[NP5]

Check your camera view before rendering!
Then as FedPete says you could scale the image used as a background.

[zeRgenTa]

If I understood correctly, all you need to do is put a scale node right after the image node.

This happens when the image you are trying to comp in is a different resolution to what you’re rendering.

[xDanny]

Thanks everyone for providing different solutions. Tired each one and they all worked.