Yes! Filters and close-up lenses work just as well on digital cameras as they do on analog cameras. They're even much easier and enjoyable to use because you can instantly see the results and can experiment much more freely.

One exception to the above are certain types of polarizing filters. There are "linear" and "circular" polarizing filters. The linear type can not be used on most modern cameras because they disrupt the metering system. Therefore fotofilter.nl does not sell this type.

SLR cameras
On almost all lenses from all common manufacturers, filters can be used. The exception to this are usually extreme wide-angle (fish-eye) lenses. Check your lens manufacturer’s documentation before ordering.

SLR-like cameras
On many of these cameras, that have a non-interchangeable lens but have extensive functionality, filters can be used. Check your camera manufacturer’s documentation before ordering.

Consumer camera's
On most of these cameras, filters cannot be used. The required lens threads are not put on these cameras by the manufacturers. For some of these cameras there are adapters available that make it possible to use filters and other accessories on them. Check your camera manufacturer’s documentation or contact the manufacturer to find out whether such an adapter exists for your camera.

On many cameras and lenses, the required filter size is written, usually somewhere near the lens itself. Often the filter size is preceded by the symbol for diameter: Ø

Examples: (click to enlarge)
 
 

If the filter size is not written anywhere on your camera or lens, check the documentation you received with that product, or contact its manufacturer for more information.