When inserting an image in to a page (or post) sometimes some of the various size options (Thumbnail, Medium, Large, Full Size) are not available. I've tried playing around with this to see when the various options are available by uploading the same file resized from quite small (120x240) up to large (2500x5000). But for this example file it never enabled the "Large" option.
I've read a couple of faq items http://faq.wordpress.com/2006/09/25/how-big-can-my-images-be/ and http://faq.wordpress.com/2007/03/04/where-is-the-thumbnail/, and searched the forums, but I still don't understand why the Large size never was available.
Can anyone clarify this?