"Repeated and automatic screen captures"
For multiple screenshots it is recommended to use an application such as Screenshoter, as the function integrated into Microsoft operating systems is somewhat tedious when it comes to storing the corresponding images.
This program has a fully automated process. So, with a single click or a simple keyboard shortcut it captures the screen and then saves the image in the directory you want, choosing both the area to immortalize as the final quality and any of the export formats available: BMP, JPG or PNG.
Screenshoter remains permanently in the background consuming very few resources.