Plantation shutters are great to install if you want to have total control over the amount of light you have coming into a room. Shutters can be opened or closed depending on the amount of light you want to filter inside.
For example, of an evening or night time, you can open up the shutters to allow light to filter in. Tilting them upward will still give you plenty of opportunity for light to enter yet it will be impossible to see in from the outside. Add some subtle subdued lighting and you will have a perfectly romantic setting without having to worry that people can readily see into your room.
During the daytime, interior plantation shutters can be opened up fully, or tilted up or down slightly to flood your room with light. Providing you have wide enough slats on your shutters there is no need at all to fold the shutters back and open them completely. Some people feel that wide slats should only be installed on big, wide windows however that is somewhat of a misconception. Small slats on small shutters can sometimes end up making everything look small. It is very bold to have wide slats on small shutters, yet it can really open a room up and help add depth and area to the room.
If you want to totally block all the light, whether during the day or night, all you have to do is close the slats completely. While this will not provide you with total blackout, it does cut out a lot of the light even during the daytime hours.
Plantation shutters are one of the most effective ways to have total control over the amount of light that you allow into a room. They are much better at regulating light than any other type of window treatment, simply because you are able to adjust or tilt them to any angle or degree. This gives much better regulation than other types of treatments, such as Roman blinds or regular fabric curtains, which expose large expanses of a window once they are opened. The only treatments comparable are venetian blinds, however usually the slats are so small on venetians that they do not give you very much control over lighting.
If controlling light flow into a room is important to you, consider installing plantation shutters. You can choose the size of the slats, and in so doing easily regulate the amount of light that enters a room based on the angle of the slats.