If you are looking for a "slide show" or "picture flow" screensaver that offers you more control over the display than Apple's built-in screensaver, then ArtSaver might be right for you. It is mostly geared towards people who want to see their image collections (such as beautiful landscape shots or fine art) as large as possible, and with the info which images they are seeing.
Note that ArtSaver does not sport fancy display styles, such as Apple's built-in picture slide show screen saver has, like the picture postcard effect, or the mosaic, or other special effects! The goal of ArtSaver is to present images such that you can enjoy them in their full glory.
Some of ArtSaver's options and features are the following: Keeps a persistent database of all the images found in the specified directory tree or iPhoto album, which allows you to display huge image databases. Use all images in a directory tree (minus the ones that are excluded by other options, see below), or all images in one of your iPhoto albums. You can review the previous images (cursor keys), pause the slide show (space bar), or have ArtSaver show the current one in Finder (return key). Options include: the speed of the gradual zoom-in and out (Ken Burns effect); the duration how long an image is displayed; whether or not the path of the image should be displayed, too. (instead of the complete path, ArtSaver can also display just the filename.) many many more... You can specify constraints to exclude certain images.
ArtSaver should work out-of-the box with its built-in defaults. However, in ArtSaver's Options pane you'll probably want to specify the directory where ArtSaver can find the images (default = ~/Pictures), and whether and how ArtSaver should display the image name. All other options in the other two sections probably work by default, but they are there if you need to change them.
What's new in this version:
New features: ArtSaver can handle multiple monitors (screens), i.e., it will store different preferences for each screen; in particular, this will allow you to display different image lists on different screens. (For this to work, you must uncheck "Main screen only" in System Preferences / Screen Savers!) There is a deliberate offset between the two (or more) screens, in order to prevent disk fighting in the case all screen savers have the same duration per image. (In tha...