Documentary poster reaseach

The poster here advertises the program on channel 4 called the Promise. The poster has many convection's to draw the viewer in, and attract the  attention of the audience. One of the convections, is the use of the writing in the C4 posters, this is usually a short sentence or slogan which will be the overall theme of the production. The example here  is “Divided land, divided loyalty”, which sums up the series quite well, giving us an immediate insight. The font style and text used is another convection of the poster, the text here is highlighted, contrasting to the rest of the poster.
Also the font used C4 text, is exclusive to channel 4 ,this  bold and distinctive font  and the highlight text make the poster immediately  eye catching to the viewer. The use of the C4 logo is also a frequent concept in channel 4 posters, and is usually positioned to the right-hand side of the poster, and changes colour depending on the text and background.  The main image of the poster uses a collage effect from what appears to be an ariel view of  the west bank , forming  the two faces of the main characters from the series separated by the wall, this ties the slogan into the text . Both this and the image  itself are  striking ,and draw  the viewers attention.
The posters  many conventions tell us several things about the series. What it is called,what channel it is on,  when its shown , what is it about, who is in it ,and where is it set . All these questions are immediately answered from a quick glance at the poster. 

For the Style guides C4 uses for both its posters and TV programs follow the link here - http://www.channel4.com/about_c4/styleguide/