If you're not a regular user of PBase, you might not notice that there are links to different image sizes below each photo. I've started uploading larger higher-resolution files (about 1200 pixels largest side) and you can view the larger versions by clicking the "original" link below an image. Unless you're on broadband though, it will take a while to download an "original" image as they're mainly between 250Kb and 500Kb with some even larger.