What are the correct image sizes for the Broadcast Theme?

[andreagarcia07]

Hi!! I have been looking everywhere and can't find the image specs for the different images on broadcast theme. I have been using standard web sizes and they don't seem to work properly. 

I'm attaching an image as a reference. All of my images look like they are zoomed in and I can't figure out how to make them look good. 

Is there somewhere to see the different sizes we need?