A fly on the wall documentary is were the camera is invisible you are only able to see the subject and would follow there every move most of the shots are for long periods of time. The camera would be with them whilst it follows there day to day routine even if they were to go on holiday or an evening party. This style of a documentary is created for entertainment purposes. most of the time it would be on celebrity such as Katie Price or Peter Andre. As they have interesting and most profitable content. In the Katie price show not only does she have such an exiting and entreating life she also is able to put the record straight and people are able to see that the made up rubbish written in magazines and newspaper is all lies and false stories. 

A participatory is were the presenter takes the viewer through the topics and links sections of the film together while being presented on screen most of the time. A good example of this would be supper nanny the mode of address in her program is investigative and optimistic. Her programs are about controlling out of hand children as there parents are unable to cope suppernanny would look investigate the problem with the child and try to help. The programs are optimistic are you would see a good outcome at the end. The target audience for super nanny would parents of all ages so they can lean from supper nanny when she help parents re-connect with there child.

A doc-soap is a series of programmes which feature an inside look at an institution through a set of "characters" who appear each week 
A good example of this would be made in Chelsea as the characters are genuinely being themselves however some of the time shots can be exaggerated for entertainment purposes. The target Market for this style of documentary would be young teens to adults aged between 15-35 however depending on the content of the program. The mode of address for a docu-soap would be entertainment as it's a series of real life exaggerated program and people are always interested to watch on to find out whats going to happen.