Teaser Trailers

What are the conventions of a teaser trailer compared to full length trailers?

I believe that there are many conventions of teaser trailers. Firstly teaser trailers are much shorter than full length trailers as its main purpose it not to give too much away in terms of the plot of the film. It rather to give tiny hints for everywhere keeping the viewers confused or in the dark but still viewers are tantalised with questions about the film. A typical convention of a teaser trailer includes a range of shots from anywhere to keep audiences entertained as the length of the teaser trailer is short and therefore must be much more specific to the target audience and genre. Most teaser trailers have quick edited shots to create suspense and keep the audience wanting to see more of it. There are more questions than answers for a teaser trailer. The same could not necessarily be said for full-length trailers as they give more away in terms of characters, dialogue, longer shots etc because of the length of the trailer. A full length trailer tends to have more dialogue e.g.: in Grown ups the trailer included long scenes of dialogue which gives more information about the film and does not leave viewers in the dark.

Can saw 3D and paranormal activity be defined as a teaser trailer? and why?

Saw 3D can be defined as a teaser trailer as it includes little snippets of violence but does not give reasons for it and also includes little developments of the characters, which is common in teaser trailers to create disorientation for viewers. Saw 3D's trailer includes a strong voiceover making the film more powerful which increases tension amongst viewers. The Saw 3D trailer typically includes blood and gore, which keeps in tone with the genre; also some people may find gore enticing and therefore teasing horror fans to watch it in cinemas when the film gets released.
Paranormal activity 2 trailer can also be defined as a teaser, as it does not give too much away in terms of plot wise and serves the purpose to keep audiences engaged. Paranormal activity 2 teaser trailer included the text 'you asked for it'. This automatically raises questions amongst viewers and they’re not sure what they asked for or what they are about to get. Paranormal Activity 2 makes good use of sound, which includes a heart-beat sound creating suspense and unease among viewers. Furthermore static sound from the TV/camera is effectively used to make viewers fell awkward. Paranormal activity 2 trailer includes 10 shots excluding titles which is very little compared to full length trailers, but the trailer serves to tease audiences into watching it. The shots are short and rapid but perfectly captured. One of the shots in paranormal activity 2 is very clever as the shot is shown to the audience caught from a camera similar to a CCTV camera connoting to the audiences that you are always being watched and moreover CCTV cameras are commonly used to capture danger/violence which increases tension.

DOES SAW 3D and Paranormal Activity 2 adhere to the conventions of the genre?

Saw 3D adheres to the conventions of horror as it uses blood/gore, dramatic sound which creates adrenalin/rush typically associated with horror. Paranormal Activity uses rapid editing and eerie sound which creates an unnatural setting.

In summary for my teaser trailer I must use rapid editing of shots, text/ minimal voiceover on the film, a range of shots and sound in tone with the genre to serve the purpose to tease viewers. Also my teaser trailer should raise more questions than answers