You can find your photo tools in the Lightbox or when using SmugMug style for your galleries.
Look under the feature image in SmugMug viewing style, or look on the left when you have a photo open in Lightbox view, to find the following photo tools if the site owner has them enabled: slideshow, photo details, share, comments, keywords, download, image tools, and a note if the image happens to be collected from another gallery. If you display filenames rather than captions, they'll be here too.
Image tools allow you to edit, copy, hide, develop, replace, or delete your photos.
or Image information, which displays your photo's EXIF data.
And download, which allows you, as a logged-in owner, to download original copies of your photos.