Howard Osei HNC Creative media

What is a Dolly Zoom  A dolly zoom is a technique used whilst shooting where the camera zooms in or out on a subject whilst the camera moves towards or away from the subject. When timed correctly , the effect created is that the subject should stay the same size whilst the background seems to compress or decompress.  The most famous scene the dolly zoom was used in is from the film Jaws. The use of this technique can be to create a sense that the character is undergoing and extreme realisation.

 Ther Aperture setting on the camera is what controls how wide the lens, therefore, determining how much light is exposed to a camera. if the picture/video has a shallow depth of field that means the lens will be opened wider whereas a deep depth of field will have a more narrow opening.  The aperture value is represented in terms of f/number meaning a lower value represents a shallow depth of field and higher will represent a deep depth of field. if the camera is using the F/2.8 aperture setting, only a fraction of the frame will be in focus as opposed to F/22 where a good majority of the frame will be in focus. depending on the lens that's in use, different aperture settings will be available, lens such as  macro and telephoto allows a larger aperture compared to a standard lens

Types of Lenses  Wide Angle Lenses  wide-angle lenses usually range between 16 and 35mm, the overall purpose of a wide-angle lens is to capture more within your frame. this may be used for shooting landscapes and cityscapes. they're commonly known to be used in establishing shots in films to help the audience depict time, place, and context. wide angles have a deep depth of field so you are able to have more of the shot in focus. a flaw to wide-angle lenses is that when used in a close-up shot the image can look quite distorted. Macro Lenses  the purpose of a macro lens is to make tiny objects seem larger, it allows a photographer to capture little details that are not visible to the eye. macro lenses have a very close focusing distance therefore the photographer has to be very close to the object to allow the image to look very crisp.  macro lenses have a variety of focal lengths that will be used for specific things. 50mm lens will be used for objects such as a coin or some jewel

Shutter Speed  The Shutter Speed in short determines the amount of time the sensor is exposed to a light source. s benefit to having a longer shutter speed is when shooting a low light as the camera has more time to gather more light for the image/video shutter speed and frame rate are sometimes referred to in the same context, but frame rate by definition is how many frames are captured per second and the shutter speed is simply the amount of time in which a single frame is exposed for.

 within cinema, split-screen is a technique that can be used to show two different scenes on the one screen simultaneously and is considered as a simple technique within a cinema.  this is an example used in the film 'Scott Pilgrim Vs the World' where it conveys two different perspectives in the same scene.  compared to the scene within the film "500 days of summer" where the scene depicts the same scenarios but almost in a different reality