Aperture and focal length
In this lecture we learnt about aperture and focus length. We learnt two new terms, these were; the maximum aperture and the focal length.The focal length indicates the angle of view (sometimes called the field of view).
The maximum aperture limits the fastest shutter speed usable, as well as the depth of field.
Lenses are marked with their aperture and focal length (below).
What does this mean?
28-300mm is the focal length of the lens. This tells us that it will ‘zoom’ from 28mm, a wide angle shot, to 300mm a telephoto shot (magnified shot).1:3.5-5.6 is the maximum aperture of the lens. There are two aperture numbers because the aperture varies as you change the focal length. If you are ‘zoomed’ out to 28mm this lens will give you a maximum aperture of f3.5, and if you are 'zoomed' in at 300mm it will only give you a maximum aperture of f5.6. This would mean it is classed as quite a slow lens.
Forced Perspective Shots
Lens foreshortening shots
Unusual viewpoint shots
Telephoto shot
Wide angle shot
Task 05: Weird World
Over the coming week we were given the task Using to go out and
shoot in at least two of the following ways using an SLR:
- Using forced perspective
-
Using lens foreshortening
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Shoot from an unusual or unfamiliar viewpoint
- Choose a specialist lens (telephoto, wide angle etc.)
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