Image wont resize to what I want

Hi all,

I’ve set within my media settings the various sizes that I would like my images to be resized to.

The width of my design is 570, so my maximum width for the large image size is set to 570, but for some reason wordpress only lets it go to 450px. This happens with both landscape and portrait images.

Please have a look at the settings by clicking the links to a couple of screenshots and let me know if I’m doing something obiously wrong, or if you know what else it could be?

Thanks in advance, any help appreciated!

media settings

image uploader